31103030021132 has 6 divisors (see below), whose sum is σ = 54430302536988. Its totient is φ = 15551515010564.

The previous prime is 31103030021113. The next prime is 31103030021171. The reversal of 31103030021132 is 23112003030113.

It is a super-2 number, since 2×31103030021132² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3887878752638 + ... + 3887878752645.

It is an arithmetic number, because the mean of its divisors is an integer number (9071717089498).

Almost surely, 2^{31103030021132} is an apocalyptic number.

It is an amenable number.

31103030021132 is a deficient number, since it is larger than the sum of its proper divisors (23327272515856).

31103030021132 is a wasteful number, since it uses less digits than its factorization.

31103030021132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7775757505287 (or 7775757505285 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31103030021132 its reverse (23112003030113), we get a palindrome (54215033051245).

The spelling of 31103030021132 in words is "thirty-one trillion, one hundred three billion, thirty million, twenty-one thousand, one hundred thirty-two".