31414851021 has 32 divisors (see below), whose sum is σ = 46084571136. Its totient is φ = 18948960000.

The previous prime is 31414851011. The next prime is 31414851037. The reversal of 31414851021 is 12015841413.

It is not a de Polignac number, because 31414851021 - 2⁵ = 31414850989 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31414851021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31414851011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172936 + ... + 304526.

It is an arithmetic number, because the mean of its divisors is an integer number (1440142848).

Almost surely, 2^31414851021 is an apocalyptic number.

31414851021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31414851021 is a deficient number, since it is larger than the sum of its proper divisors (14669720115).

31414851021 is a wasteful number, since it uses less digits than its factorization.

31414851021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131793.

The product of its (nonzero) digits is 3840, while the sum is 30.

The spelling of 31414851021 in words is "thirty-one billion, four hundred fourteen million, eight hundred fifty-one thousand, twenty-one".