31040212413 has 16 divisors (see below), whose sum is σ = 47589556736. Its totient is φ = 17628444720.

The previous prime is 31040212393. The next prime is 31040212417. The reversal of 31040212413 is 31421204013.

It is not a de Polignac number, because 31040212413 - 2⁵ = 31040212381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31040212413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31040212417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4530643 + ... + 4537488.

It is an arithmetic number, because the mean of its divisors is an integer number (2974347296).

Almost surely, 2^31040212413 is an apocalyptic number.

It is an amenable number.

31040212413 is a deficient number, since it is larger than the sum of its proper divisors (16549344323).

31040212413 is a wasteful number, since it uses less digits than its factorization.

31040212413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9068304.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31040212413 its reverse (31421204013), we get a palindrome (62461416426).

The spelling of 31040212413 in words is "thirty-one billion, forty million, two hundred twelve thousand, four hundred thirteen".