31431012150 has 48 divisors (see below), whose sum is σ = 78638765904. Its totient is φ = 8307425280.

The previous prime is 31431012149. The next prime is 31431012163. The reversal of 31431012150 is 5121013413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 910219 + ... + 944118.

It is an arithmetic number, because the mean of its divisors is an integer number (1638307623).

Almost surely, 2^31431012150 is an apocalyptic number.

31431012150 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31431012150 is an abundant number, since it is smaller than the sum of its proper divisors (47207753754).

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

31431012150 is a wasteful number, since it uses less digits than its factorization.

31431012150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854465 (or 1854460 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 31431012150 its reverse (5121013413), we get a palindrome (36552025563).

The spelling of 31431012150 in words is "thirty-one billion, four hundred thirty-one million, twelve thousand, one hundred fifty".