31200101012 has 12 divisors (see below), whose sum is σ = 55348124916. Its totient is φ = 15386351040.

The previous prime is 31200101011. The next prime is 31200101017. The reversal of 31200101012 is 21010100213.

It can be written as a sum of positive squares in 2 ways, for example, as 26320519696 + 4879581316 = 162236^2 + 69854^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31200100984 and 31200101002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31200101011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53424539 + ... + 53425122.

It is an arithmetic number, because the mean of its divisors is an integer number (4612343743).

Almost surely, 2^31200101012 is an apocalyptic number.

It is an amenable number.

31200101012 is a deficient number, since it is larger than the sum of its proper divisors (24148023904).

31200101012 is a wasteful number, since it uses less digits than its factorization.

31200101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106849738 (or 106849736 counting only the distinct ones).

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

Adding to 31200101012 its reverse (21010100213), we get a palindrome (52210201225).

The spelling of 31200101012 in words is "thirty-one billion, two hundred million, one hundred one thousand, twelve".