31420634612505 has 32 divisors (see below), whose sum is σ = 53701315801344. Its totient is φ = 15632351809536.

The previous prime is 31420634612501. The next prime is 31420634612567. The reversal of 31420634612505 is 50521643602413.

It is not a de Polignac number, because 31420634612505 - 2² = 31420634612501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31420634612501) 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, 545184349 + ... + 545241978.

It is an arithmetic number, because the mean of its divisors is an integer number (1678166118792).

Almost surely, 2^{31420634612505} is an apocalyptic number.

It is an amenable number.

31420634612505 is a deficient number, since it is larger than the sum of its proper divisors (22280681188839).

31420634612505 is a wasteful number, since it uses less digits than its factorization.

31420634612505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090426465.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 31420634612505 in words is "thirty-one trillion, four hundred twenty billion, six hundred thirty-four million, six hundred twelve thousand, five hundred five".