31404225400 has 48 divisors (see below), whose sum is σ = 73422811800. Its totient is φ = 12491498880.

The previous prime is 31404225371. The next prime is 31404225407. The reversal of 31404225400 is 452240413.

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 (31404225407) 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, 402807 + ... + 474406.

Almost surely, 2^31404225400 is an apocalyptic number.

It is an amenable number.

31404225400 is an abundant number, since it is smaller than the sum of its proper divisors (42018586400).

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

31404225400 is a wasteful number, since it uses less digits than its factorization.

31404225400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877408 (or 877399 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 31404225400 its reverse (452240413), we get a palindrome (31856465813).

The spelling of 31404225400 in words is "thirty-one billion, four hundred four million, two hundred twenty-five thousand, four hundred".