31401363284785 has 64 divisors (see below), whose sum is σ = 43033945651200. Its totient is φ = 21830591232000.

The previous prime is 31401363284783. The next prime is 31401363284843. The reversal of 31401363284785 is 58748236310413.

It is not a de Polignac number, because 31401363284785 - 2¹ = 31401363284783 is a prime.

It is a super-2 number, since 2×31401363284785² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31401363284783) 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, 28288090 + ... + 29377180.

It is an arithmetic number, because the mean of its divisors is an integer number (672405400800).

Almost surely, 2^{31401363284785} is an apocalyptic number.

It is an amenable number.

31401363284785 is a deficient number, since it is larger than the sum of its proper divisors (11632582366415).

31401363284785 is a wasteful number, since it uses less digits than its factorization.

31401363284785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089530.

The product of its (nonzero) digits is 11612160, while the sum is 55.

The spelling of 31401363284785 in words is "thirty-one trillion, four hundred one billion, three hundred sixty-three million, two hundred eighty-four thousand, seven hundred eighty-five".