1406656231 has 4 divisors (see below), whose sum is σ = 1416776200. Its totient is φ = 1396536264.

The previous prime is 1406656171. The next prime is 1406656243. The reversal of 1406656231 is 1326566041.

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

It is a cyclic number.

It is not a de Polignac number, because 1406656231 - 2¹³ = 1406648039 is a prime.

It is a super-2 number, since 2×1406656231² = 3957363504422250722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406656631) 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, 5059776 + ... + 5060053.

It is an arithmetic number, because the mean of its divisors is an integer number (354194050).

Almost surely, 2^1406656231 is an apocalyptic number.

1406656231 is a deficient number, since it is larger than the sum of its proper divisors (10119969).

1406656231 is a wasteful number, since it uses less digits than its factorization.

1406656231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10119968.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1406656231 is about 37505.4160222227. The cubic root of 1406656231 is about 1120.4590568770.

The spelling of 1406656231 in words is "one billion, four hundred six million, six hundred fifty-six thousand, two hundred thirty-one".