31204213002 has 24 divisors (see below), whose sum is σ = 68464943040. Its totient is φ = 10269740520.

The previous prime is 31204212983. The next prime is 31204213043. The reversal of 31204213002 is 20031240213.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10970524 + ... + 10973367.

It is an arithmetic number, because the mean of its divisors is an integer number (2852705960).

Almost surely, 2^31204213002 is an apocalyptic number.

31204213002 is an abundant number, since it is smaller than the sum of its proper divisors (37260730038).

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

31204213002 is a wasteful number, since it uses less digits than its factorization.

31204213002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21943978 (or 21943975 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31204213002 its reverse (20031240213), we get a palindrome (51235453215).

The spelling of 31204213002 in words is "thirty-one billion, two hundred four million, two hundred thirteen thousand, two".