2129437431 has 56 divisors (see below), whose sum is σ = 3577572624. Its totient is φ = 1255512960.

The previous prime is 2129437421. The next prime is 2129437441. The reversal of 2129437431 is 1347349212.

It is a happy number.

2129437431 is a `hidden beast` number, since 212 + 9 + 4 + 3 + 7 + 431 = 666.

It is an interprime number because it is at equal distance from previous prime (2129437421) and next prime (2129437441).

It is not a de Polignac number, because 2129437431 - 2¹⁸ = 2129175287 is a prime.

It is a super-2 number, since 2×2129437431² = 9069007545087759522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129437421) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 293115 + ... + 300291.

Almost surely, 2^2129437431 is an apocalyptic number.

2129437431 is a deficient number, since it is larger than the sum of its proper divisors (1448135193).

2129437431 is an equidigital number, since it uses as much as digits as its factorization.

2129437431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7243 (or 7228 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 2129437431 is about 46145.8278829192. The cubic root of 2129437431 is about 1286.5350660577.

The spelling of 2129437431 in words is "two billion, one hundred twenty-nine million, four hundred thirty-seven thousand, four hundred thirty-one".