31303023132212 has 72 divisors (see below), whose sum is σ = 59707261281024. Its totient is φ = 14352943602816.

The previous prime is 31303023132209. The next prime is 31303023132229. The reversal of 31303023132212 is 21223132030313.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152280533 + ... + 152485955.

It is an arithmetic number, because the mean of its divisors is an integer number (829267517792).

Almost surely, 2^{31303023132212} is an apocalyptic number.

It is an amenable number.

31303023132212 is a deficient number, since it is larger than the sum of its proper divisors (28404238148812).

31303023132212 is a wasteful number, since it uses less digits than its factorization.

31303023132212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206929 (or 206914 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 31303023132212 its reverse (21223132030313), we get a palindrome (52526155162525).

The spelling of 31303023132212 in words is "thirty-one trillion, three hundred three billion, twenty-three million, one hundred thirty-two thousand, two hundred twelve".