31235400452431 has 4 divisors (see below), whose sum is σ = 35697600517072. Its totient is φ = 26773200387792.

The previous prime is 31235400452429. The next prime is 31235400452441. The reversal of 31235400452431 is 13425400453213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31235400452431 - 2¹ = 31235400452429 is a prime.

It is a super-2 number, since 2×31235400452431² (a number of 28 digits) 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 (31235400452441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2231100032310 + ... + 2231100032323.

It is an arithmetic number, because the mean of its divisors is an integer number (8924400129268).

Almost surely, 2^{31235400452431} is an apocalyptic number.

31235400452431 is a deficient number, since it is larger than the sum of its proper divisors (4462200064641).

31235400452431 is an equidigital number, since it uses as much as digits as its factorization.

31235400452431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4462200064640.

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 31235400452431 in words is "thirty-one trillion, two hundred thirty-five billion, four hundred million, four hundred fifty-two thousand, four hundred thirty-one".