1031402656 has 12 divisors (see below), whose sum is σ = 2030574042. Its totient is φ = 515701312.

The previous prime is 1031402653. The next prime is 1031402681. The reversal of 1031402656 is 6562041301.

It can be written as a sum of positive squares in only one way, i.e., 704371600 + 327031056 = 26540^2 + 18084^2 .

It is not an unprimeable number, because it can be changed into a prime (1031402651) 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 as a sum of consecutive naturals, namely, 16115635 + ... + 16115698.

Almost surely, 2^1031402656 is an apocalyptic number.

1031402656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1031402656 is a deficient number, since it is larger than the sum of its proper divisors (999171386).

1031402656 is an equidigital number, since it uses as much as digits as its factorization.

1031402656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32231343 (or 32231335 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1031402656 is about 32115.4582094044. The cubic root of 1031402656 is about 1010.3598547796.

Adding to 1031402656 its reverse (6562041301), we get a palindrome (7593443957).

The spelling of 1031402656 in words is "one billion, thirty-one million, four hundred two thousand, six hundred fifty-six".