3121260324400 has 30 divisors (see below), whose sum is σ = 7498827930332. Its totient is φ = 1248504129600.

The previous prime is 3121260324367. The next prime is 3121260324409. The reversal of 3121260324400 is 44230621213.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3121260324409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3901575006 + ... + 3901575805.

Almost surely, 2^{3121260324400} is an apocalyptic number.

It is an amenable number.

3121260324400 is an abundant number, since it is smaller than the sum of its proper divisors (4377567605932).

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

3121260324400 is a wasteful number, since it uses less digits than its factorization.

3121260324400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7803150829 (or 7803150818 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 3121260324400 its reverse (44230621213), we get a palindrome (3165490945613).

The spelling of 3121260324400 in words is "three trillion, one hundred twenty-one billion, two hundred sixty million, three hundred twenty-four thousand, four hundred".