2131400031 has 16 divisors (see below), whose sum is σ = 2992554240. Its totient is φ = 1345645440.

The previous prime is 2131400017. The next prime is 2131400081. The reversal of 2131400031 is 1300041312.

It is not a de Polignac number, because 2131400031 - 2⁶ = 2131399967 is a prime.

It is a super-2 number, since 2×2131400031² = 9085732184293601922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131400081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201351 + ... + 211671.

It is an arithmetic number, because the mean of its divisors is an integer number (187034640).

Almost surely, 2^2131400031 is an apocalyptic number.

2131400031 is a deficient number, since it is larger than the sum of its proper divisors (861154209).

2131400031 is a wasteful number, since it uses less digits than its factorization.

2131400031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13966.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2131400031 is about 46167.0881797845. The cubic root of 2131400031 is about 1286.9301905120.

Adding to 2131400031 its reverse (1300041312), we get a palindrome (3431441343).

The spelling of 2131400031 in words is "two billion, one hundred thirty-one million, four hundred thousand, thirty-one".