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354318961 = 2571378673
BaseRepresentation
bin10101000111100…
…111101001110001
3220200201021020111
4111013213221301
51211201201321
655054141321
711531442613
oct2507475161
9820637214
10354318961
11172005097
129a7b1841
1358538cb9
14350b2db3
152118d5e1
hex151e7a71

354318961 has 4 divisors (see below), whose sum is σ = 355697892. Its totient is φ = 352940032.

The previous prime is 354318959. The next prime is 354318977. The reversal of 354318961 is 169813453.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 303282225 + 51036736 = 17415^2 + 7144^2 .

It is a cyclic number.

It is not a de Polignac number, because 354318961 - 21 = 354318959 is a prime.

It is a super-2 number, since 2×3543189612 = 251083852248239042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354318901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689080 + ... + 689593.

It is an arithmetic number, because the mean of its divisors is an integer number (88924473).

Almost surely, 2354318961 is an apocalyptic number.

It is an amenable number.

354318961 is a deficient number, since it is larger than the sum of its proper divisors (1378931).

354318961 is a wasteful number, since it uses less digits than its factorization.

354318961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378930.

The product of its digits is 77760, while the sum is 40.

The square root of 354318961 is about 18823.3621067013. The cubic root of 354318961 is about 707.6167935145.

The spelling of 354318961 in words is "three hundred fifty-four million, three hundred eighteen thousand, nine hundred sixty-one".

Divisors: 1 257 1378673 354318961