31421254524 has 48 divisors (see below), whose sum is σ = 81337011840. Its totient is φ = 9360207040.

The previous prime is 31421254499. The next prime is 31421254561. The reversal of 31421254524 is 42545212413.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2009499 + ... + 2025074.

It is an arithmetic number, because the mean of its divisors is an integer number (1694521080).

Almost surely, 2^31421254524 is an apocalyptic number.

It is an amenable number.

31421254524 is an abundant number, since it is smaller than the sum of its proper divisors (49915757316).

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

31421254524 is a wasteful number, since it uses less digits than its factorization.

31421254524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034650 (or 4034648 counting only the distinct ones).

The product of its digits is 38400, while the sum is 33.

Adding to 31421254524 its reverse (42545212413), we get a palindrome (73966466937).

The spelling of 31421254524 in words is "thirty-one billion, four hundred twenty-one million, two hundred fifty-four thousand, five hundred twenty-four".