3121651632 has 80 divisors (see below), whose sum is σ = 9179912448. Its totient is φ = 904823040.

The previous prime is 3121651619. The next prime is 3121651633. The reversal of 3121651632 is 2361561213.

It is a self number, because there is not a number n which added to its sum of digits gives 3121651632.

It is not an unprimeable number, because it can be changed into a prime (3121651633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116383 + ... + 140670.

Almost surely, 2^3121651632 is an apocalyptic number.

It is an amenable number.

3121651632 is an abundant number, since it is smaller than the sum of its proper divisors (6058260816).

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

3121651632 is a wasteful number, since it uses less digits than its factorization.

3121651632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257098 (or 257092 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 3121651632 is about 55871.7426970020. The cubic root of 3121651632 is about 1461.4865125014.

The spelling of 3121651632 in words is "three billion, one hundred twenty-one million, six hundred fifty-one thousand, six hundred thirty-two".