3121012400 has 60 divisors (see below), whose sum is σ = 8179901304. Its totient is φ = 1134912000.

The previous prime is 3121012387. The next prime is 3121012417. The reversal of 3121012400 is 42101213.

3121012400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 350261 + ... + 359060.

Almost surely, 2^3121012400 is an apocalyptic number.

It is an amenable number.

3121012400 is an abundant number, since it is smaller than the sum of its proper divisors (5058888904).

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

3121012400 is a wasteful number, since it uses less digits than its factorization.

3121012400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709350 (or 709339 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 3121012400 is about 55866.0218737651. The cubic root of 3121012400 is about 1461.3867477153.

Adding to 3121012400 its reverse (42101213), we get a palindrome (3163113613).

The spelling of 3121012400 in words is "three billion, one hundred twenty-one million, twelve thousand, four hundred".