31054521400 has 48 divisors (see below), whose sum is σ = 82516303440. Its totient is φ = 10647264000.

The previous prime is 31054521371. The next prime is 31054521403. The reversal of 31054521400 is 412545013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31054521403) 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, 11089501 + ... + 11092300.

It is an arithmetic number, because the mean of its divisors is an integer number (1719089655).

Almost surely, 2^31054521400 is an apocalyptic number.

It is an amenable number.

31054521400 is an abundant number, since it is smaller than the sum of its proper divisors (51461782040).

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

31054521400 is a wasteful number, since it uses less digits than its factorization.

31054521400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22181824 (or 22181815 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 31054521400 in words is "thirty-one billion, fifty-four million, five hundred twenty-one thousand, four hundred".