31143125400 has 48 divisors (see below), whose sum is σ = 96543690600. Its totient is φ = 8304833280.

The previous prime is 31143125393. The next prime is 31143125411. The reversal of 31143125400 is 452134113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25952005 + ... + 25953204.

Almost surely, 2^31143125400 is an apocalyptic number.

31143125400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31143125400 is an abundant number, since it is smaller than the sum of its proper divisors (65400565200).

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

31143125400 is a wasteful number, since it uses less digits than its factorization.

31143125400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51905228 (or 51905219 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 31143125400 its reverse (452134113), we get a palindrome (31595259513).

The spelling of 31143125400 in words is "thirty-one billion, one hundred forty-three million, one hundred twenty-five thousand, four hundred".