3121764372 has 36 divisors (see below), whose sum is σ = 8306450880. Its totient is φ = 985820112.

The previous prime is 3121764367. The next prime is 3121764379. The reversal of 3121764372 is 2734671213.

3121764372 is a `hidden beast` number, since 3 + 1 + 2 + 1 + 7 + 643 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121764379) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2281308 + ... + 2282675.

Almost surely, 2^3121764372 is an apocalyptic number.

It is an amenable number.

3121764372 is an abundant number, since it is smaller than the sum of its proper divisors (5184686508).

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

3121764372 is a wasteful number, since it uses less digits than its factorization.

3121764372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4564012 (or 4564007 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 3121764372 is about 55872.7516057693. The cubic root of 3121764372 is about 1461.5041063935.

The spelling of 3121764372 in words is "three billion, one hundred twenty-one million, seven hundred sixty-four thousand, three hundred seventy-two".