31350253431 has 48 divisors (see below), whose sum is σ = 50008896000. Its totient is φ = 17111624640.

The previous prime is 31350253427. The next prime is 31350253453. The reversal of 31350253431 is 13435205313.

It is not a de Polignac number, because 31350253431 - 2² = 31350253427 is a prime.

It is a super-2 number, since 2×31350253431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31350253411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10452070 + ... + 10455068.

It is an arithmetic number, because the mean of its divisors is an integer number (1041852000).

Almost surely, 2^31350253431 is an apocalyptic number.

31350253431 is a deficient number, since it is larger than the sum of its proper divisors (18658642569).

31350253431 is a wasteful number, since it uses less digits than its factorization.

31350253431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3996 (or 3973 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 31350253431 its reverse (13435205313), we get a palindrome (44785458744).

The spelling of 31350253431 in words is "thirty-one billion, three hundred fifty million, two hundred fifty-three thousand, four hundred thirty-one".