2656349531 has 4 divisors (see below), whose sum is σ = 2897835864. Its totient is φ = 2414863200.

The previous prime is 2656349519. The next prime is 2656349561. The reversal of 2656349531 is 1359436562.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2656349531 is a prime.

It is a super-2 number, since 2×2656349531² = 14112385661687839922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2656349561) 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, 120743150 + ... + 120743171.

It is an arithmetic number, because the mean of its divisors is an integer number (724458966).

Almost surely, 2^2656349531 is an apocalyptic number.

2656349531 is a deficient number, since it is larger than the sum of its proper divisors (241486333).

2656349531 is a wasteful number, since it uses less digits than its factorization.

2656349531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241486332.

The product of its digits is 583200, while the sum is 44.

The square root of 2656349531 is about 51539.7859037074. The cubic root of 2656349531 is about 1384.9318617836.

The spelling of 2656349531 in words is "two billion, six hundred fifty-six million, three hundred forty-nine thousand, five hundred thirty-one".