31430540521005 has 64 divisors (see below), whose sum is σ = 53978708095488. Its totient is φ = 15561294233600.

The previous prime is 31430540521001. The next prime is 31430540521027. The reversal of 31430540521005 is 50012504503413.

It is not a de Polignac number, because 31430540521005 - 2² = 31430540521001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430540521001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4453477 + ... + 9093653.

It is an arithmetic number, because the mean of its divisors is an integer number (843417313992).

Almost surely, 2^{31430540521005} is an apocalyptic number.

It is an amenable number.

31430540521005 is a deficient number, since it is larger than the sum of its proper divisors (22548167574483).

31430540521005 is a wasteful number, since it uses less digits than its factorization.

31430540521005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4640566.

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 31430540521005 in words is "thirty-one trillion, four hundred thirty billion, five hundred forty million, five hundred twenty-one thousand, five".