1056513031 has 16 divisors (see below), whose sum is σ = 1272360960. Its totient is φ = 856997280.

The previous prime is 1056513019. The next prime is 1056513043. The reversal of 1056513031 is 1303156501.

It is an interprime number because it is at equal distance from previous prime (1056513019) and next prime (1056513043).

It is a de Polignac number, because none of the positive numbers 2^k-1056513031 is a prime.

It is a super-2 number, since 2×1056513031² = 2232439569345613922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1056512987 and 1056513005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056513001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137370 + ... + 144856.

It is an arithmetic number, because the mean of its divisors is an integer number (79522560).

Almost surely, 2^1056513031 is an apocalyptic number.

1056513031 is a deficient number, since it is larger than the sum of its proper divisors (215847929).

1056513031 is a wasteful number, since it uses less digits than its factorization.

1056513031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8574.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 1056513031 is about 32504.0463788741. The cubic root of 1056513031 is about 1018.4935570117.

Adding to 1056513031 its reverse (1303156501), we get a palindrome (2359669532).

The spelling of 1056513031 in words is "one billion, fifty-six million, five hundred thirteen thousand, thirty-one".