1057431263 has 32 divisors (see below), whose sum is σ = 1393459200. Its totient is φ = 780240384.

The previous prime is 1057431227. The next prime is 1057431283. The reversal of 1057431263 is 3621347501.

It is not a de Polignac number, because 1057431263 - 2¹⁸ = 1057169119 is a prime.

It is a super-2 number, since 2×1057431263² = 2236321751939550338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057431283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57506 + ... + 73632.

It is an arithmetic number, because the mean of its divisors is an integer number (43545600).

Almost surely, 2^1057431263 is an apocalyptic number.

1057431263 is a deficient number, since it is larger than the sum of its proper divisors (336027937).

1057431263 is a wasteful number, since it uses less digits than its factorization.

1057431263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16199.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 1057431263 is about 32518.1681987162. The cubic root of 1057431263 is about 1018.7885344652.

Adding to 1057431263 its reverse (3621347501), we get a palindrome (4678778764).

The spelling of 1057431263 in words is "one billion, fifty-seven million, four hundred thirty-one thousand, two hundred sixty-three".