3121421400 has 96 divisors (see below), whose sum is σ = 10751581200. Its totient is φ = 832377600.

The previous prime is 3121421399. The next prime is 3121421411. The reversal of 3121421400 is 41241213.

3121421400 is a `hidden beast` number, since 31 + 214 + 21 + 400 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 283621 + ... + 294420.

Almost surely, 2^3121421400 is an apocalyptic number.

3121421400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3121421400 is an abundant number, since it is smaller than the sum of its proper divisors (7630159800).

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

3121421400 is a wasteful number, since it uses less digits than its factorization.

3121421400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578066 (or 578051 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3121421400 is about 55869.6822972889. The cubic root of 3121421400 is about 1461.4505818174.

Adding to 3121421400 its reverse (41241213), we get a palindrome (3162662613).

The spelling of 3121421400 in words is "three billion, one hundred twenty-one million, four hundred twenty-one thousand, four hundred".