31402130012 has 12 divisors (see below), whose sum is σ = 59949521016. Its totient is φ = 14273695440.

The previous prime is 31402129981. The next prime is 31402130021. The reversal of 31402130012 is 21003120413.

It is a super-2 number, since 2×31402130012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356842343 + ... + 356842430.

It is an arithmetic number, because the mean of its divisors is an integer number (4995793418).

Almost surely, 2^31402130012 is an apocalyptic number.

It is an amenable number.

31402130012 is a deficient number, since it is larger than the sum of its proper divisors (28547391004).

31402130012 is a wasteful number, since it uses less digits than its factorization.

31402130012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713684788 (or 713684786 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31402130012 its reverse (21003120413), we get a palindrome (52405250425).

The spelling of 31402130012 in words is "thirty-one billion, four hundred two million, one hundred thirty thousand, twelve".