1400131831 has 32 divisors (see below), whose sum is σ = 1793664000. Its totient is φ = 1087400160.

The previous prime is 1400131807. The next prime is 1400131903. The reversal of 1400131831 is 1381310041.

It is a de Polignac number, because none of the positive numbers 2^k-1400131831 is a prime.

It is a super-2 number, since 2×1400131831² = 3920738288358825122, which 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 (1400131531) 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 31 ways as a sum of consecutive naturals, for example, 145221 + ... + 154561.

It is an arithmetic number, because the mean of its divisors is an integer number (56052000).

Almost surely, 2^1400131831 is an apocalyptic number.

1400131831 is a deficient number, since it is larger than the sum of its proper divisors (393532169).

1400131831 is an equidigital number, since it uses as much as digits as its factorization.

1400131831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9404 (or 9390 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1400131831 is about 37418.3354921087. The cubic root of 1400131831 is about 1118.7240547607.

Adding to 1400131831 its reverse (1381310041), we get a palindrome (2781441872).

The spelling of 1400131831 in words is "one billion, four hundred million, one hundred thirty-one thousand, eight hundred thirty-one".