31440230047 has 2 divisors, whose sum is σ = 31440230048. Its totient is φ = 31440230046.

The previous prime is 31440230033. The next prime is 31440230071. The reversal of 31440230047 is 74003204413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31440230047 - 2²⁷ = 31306012319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31440229997 and 31440230024.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31440230077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15720115023 + 15720115024.

It is an arithmetic number, because the mean of its divisors is an integer number (15720115024).

Almost surely, 2^31440230047 is an apocalyptic number.

31440230047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31440230047 is an equidigital number, since it uses as much as digits as its factorization.

31440230047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

The spelling of 31440230047 in words is "thirty-one billion, four hundred forty million, two hundred thirty thousand, forty-seven".