31205023212104 has 64 divisors (see below), whose sum is σ = 73242737827200. Its totient is φ = 12152869069824.

The previous prime is 31205023212071. The next prime is 31205023212119. The reversal of 31205023212104 is 40121232050213.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 565116974 + ... + 565172189.

It is an arithmetic number, because the mean of its divisors is an integer number (1144417778550).

Almost surely, 2^{31205023212104} is an apocalyptic number.

31205023212104 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31205023212104 is an abundant number, since it is smaller than the sum of its proper divisors (42037714615096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31205023212104 is a wasteful number, since it uses less digits than its factorization.

31205023212104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130289222 (or 1130289218 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 31205023212104 its reverse (40121232050213), we get a palindrome (71326255262317).

The spelling of 31205023212104 in words is "thirty-one trillion, two hundred five billion, twenty-three million, two hundred twelve thousand, one hundred four".