2131201431 has 12 divisors (see below), whose sum is σ = 3078814960. Its totient is φ = 1420610400.

The previous prime is 2131201427. The next prime is 2131201433. The reversal of 2131201431 is 1341021312.

2131201431 is a `hidden beast` number, since 2 + 1 + 31 + 201 + 431 = 666.

It is not a de Polignac number, because 2131201431 - 2² = 2131201427 is a prime.

It is a super-2 number, since 2×2131201431² = 9084039078992895522, 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 (2131201433) 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 11 ways as a sum of consecutive naturals, for example, 97731 + ... + 117531.

Almost surely, 2^2131201431 is an apocalyptic number.

2131201431 is a deficient number, since it is larger than the sum of its proper divisors (947613529).

2131201431 is a wasteful number, since it uses less digits than its factorization.

2131201431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31766 (or 31763 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2131201431 is about 46164.9372467894. The cubic root of 2131201431 is about 1286.8902179945.

Adding to 2131201431 its reverse (1341021312), we get a palindrome (3472222743).

The spelling of 2131201431 in words is "two billion, one hundred thirty-one million, two hundred one thousand, four hundred thirty-one".