31230400047 has 80 divisors (see below), whose sum is σ = 53162890368. Its totient is φ = 16171928640.

The previous prime is 31230400037. The next prime is 31230400049. The reversal of 31230400047 is 74000403213.

It is not a de Polignac number, because 31230400047 - 2⁶ = 31230399983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230400049) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 48569508 + ... + 48570150.

Almost surely, 2^31230400047 is an apocalyptic number.

31230400047 is a deficient number, since it is larger than the sum of its proper divisors (21932490321).

31230400047 is an equidigital number, since it uses as much as digits as its factorization.

31230400047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298 (or 1277 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The spelling of 31230400047 in words is "thirty-one billion, two hundred thirty million, four hundred thousand, forty-seven".