31022020312 has 8 divisors (see below), whose sum is σ = 58166288100. Its totient is φ = 15511010152.

The previous prime is 31022020301. The next prime is 31022020333. The reversal of 31022020312 is 21302022013.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1938876262 + ... + 1938876277.

Almost surely, 2^31022020312 is an apocalyptic number.

It is an amenable number.

31022020312 is a deficient number, since it is larger than the sum of its proper divisors (27144267788).

31022020312 is a wasteful number, since it uses less digits than its factorization.

31022020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3877752545 (or 3877752541 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31022020312 its reverse (21302022013), we get a palindrome (52324042325).

The spelling of 31022020312 in words is "thirty-one billion, twenty-two million, twenty thousand, three hundred twelve".