31101020012 has 12 divisors (see below), whose sum is σ = 54511698696. Its totient is φ = 15526248960.

The previous prime is 31101020011. The next prime is 31101020021. The reversal of 31101020012 is 21002010113.

It is a junction number, because it is equal to n+sod(n) for n = 31101019975 and 31101020002.

It is not an unprimeable number, because it can be changed into a prime (31101020011) 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, 6062378 + ... + 6067505.

It is an arithmetic number, because the mean of its divisors is an integer number (4542641558).

Almost surely, 2^31101020012 is an apocalyptic number.

It is an amenable number.

31101020012 is a deficient number, since it is larger than the sum of its proper divisors (23410678684).

31101020012 is a wasteful number, since it uses less digits than its factorization.

31101020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12130528 (or 12130526 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 31101020012 its reverse (21002010113), we get a palindrome (52103030125).

The spelling of 31101020012 in words is "thirty-one billion, one hundred one million, twenty thousand, twelve".