31485814051 has 16 divisors (see below), whose sum is σ = 33937440768. Its totient is φ = 29125720800.

The previous prime is 31485814043. The next prime is 31485814067. The reversal of 31485814051 is 15041858413.

It is a cyclic number.

It is not a de Polignac number, because 31485814051 - 2³ = 31485814043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31485813995 and 31485814013.

It is not an unprimeable number, because it can be changed into a prime (31485814091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1103181 + ... + 1131361.

It is an arithmetic number, because the mean of its divisors is an integer number (2121090048).

Almost surely, 2^31485814051 is an apocalyptic number.

31485814051 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31485814051 is a deficient number, since it is larger than the sum of its proper divisors (2451626717).

31485814051 is a wasteful number, since it uses less digits than its factorization.

31485814051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29802.

The product of its (nonzero) digits is 76800, while the sum is 40.

The spelling of 31485814051 in words is "thirty-one billion, four hundred eighty-five million, eight hundred fourteen thousand, fifty-one".