345503531 has 2 divisors, whose sum is σ = 345503532. Its totient is φ = 345503530.

The previous prime is 345503503. The next prime is 345503551. The reversal of 345503531 is 135305543.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345503531 is a prime.

It is a super-2 number, since 2×345503531² = 238745379866935922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 345503494 and 345503503.

It is not a weakly prime, because it can be changed into another prime (345503551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172751765 + 172751766.

It is an arithmetic number, because the mean of its divisors is an integer number (172751766).

Almost surely, 2^345503531 is an apocalyptic number.

345503531 is a deficient number, since it is larger than the sum of its proper divisors (1).

345503531 is an equidigital number, since it uses as much as digits as its factorization.

345503531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 345503531 is about 18587.7252777202. The cubic root of 345503531 is about 701.6989554773.

The spelling of 345503531 in words is "three hundred forty-five million, five hundred three thousand, five hundred thirty-one".