1056431034551 has 4 divisors (see below), whose sum is σ = 1084983224712. Its totient is φ = 1027878844392.

The previous prime is 1056431034517. The next prime is 1056431034557. The reversal of 1056431034551 is 1554301346501.

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 1056431034551 - 2⁶ = 1056431034487 is a prime.

It is a super-2 number, since 2×1056431034551² (a number of 25 digits) 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 (1056431034557) 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, 14276095025 + ... + 14276095098.

It is an arithmetic number, because the mean of its divisors is an integer number (271245806178).

Almost surely, 2^{1056431034551} is an apocalyptic number.

1056431034551 is a deficient number, since it is larger than the sum of its proper divisors (28552190161).

1056431034551 is an equidigital number, since it uses as much as digits as its factorization.

1056431034551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28552190160.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 1056431034551 in words is "one trillion, fifty-six billion, four hundred thirty-one million, thirty-four thousand, five hundred fifty-one".