31402130031 has 16 divisors (see below), whose sum is σ = 46526323200. Its totient is φ = 20932661304.

The previous prime is 31402130027. The next prime is 31402130033. The reversal of 31402130031 is 13003120413.

31402130031 is a `hidden beast` number, since 314 + 0 + 21 + 300 + 31 = 666.

It is not a de Polignac number, because 31402130031 - 2² = 31402130027 is a prime.

It is a super-2 number, since 2×31402130031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31402129986 and 31402130013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31402130033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246010 + ... + 351176.

It is an arithmetic number, because the mean of its divisors is an integer number (2907895200).

Almost surely, 2^31402130031 is an apocalyptic number.

31402130031 is a deficient number, since it is larger than the sum of its proper divisors (15124193169).

31402130031 is a wasteful number, since it uses less digits than its factorization.

31402130031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116235 (or 116229 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31402130031 its reverse (13003120413), we get a palindrome (44405250444).

The spelling of 31402130031 in words is "thirty-one billion, four hundred two million, one hundred thirty thousand, thirty-one".