31000332102220 has 24 divisors (see below), whose sum is σ = 70108443370224. Its totient is φ = 11446276468416.

The previous prime is 31000332102197. The next prime is 31000332102241. The reversal of 31000332102220 is 2220123300013.

It is a super-2 number, since 2×31000332102220² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59616023014 + ... + 59616023533.

It is an arithmetic number, because the mean of its divisors is an integer number (2921185140426).

Almost surely, 2^{31000332102220} is an apocalyptic number.

It is an amenable number.

31000332102220 is an abundant number, since it is smaller than the sum of its proper divisors (39108111268004).

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

31000332102220 is a wasteful number, since it uses less digits than its factorization.

31000332102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119232046569 (or 119232046567 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31000332102220 its reverse (2220123300013), we get a palindrome (33220455402233).

The spelling of 31000332102220 in words is "thirty-one trillion, three hundred thirty-two million, one hundred two thousand, two hundred twenty".