31210420412 has 24 divisors (see below), whose sum is σ = 56160392736. Its totient is φ = 15165586368.

The previous prime is 31210420403. The next prime is 31210420499. The reversal of 31210420412 is 21402401213.

It is a congruent number.

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, 2633 + ... + 249855.

It is an arithmetic number, because the mean of its divisors is an integer number (2340016364).

Almost surely, 2^31210420412 is an apocalyptic number.

It is an amenable number.

31210420412 is a deficient number, since it is larger than the sum of its proper divisors (24949972324).

31210420412 is a wasteful number, since it uses less digits than its factorization.

31210420412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248117 (or 248115 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 31210420412 its reverse (21402401213), we get a palindrome (52612821625).

The spelling of 31210420412 in words is "thirty-one billion, two hundred ten million, four hundred twenty thousand, four hundred twelve".