31232040213 has 8 divisors (see below), whose sum is σ = 45428422176. Its totient is φ = 18928509200.

The previous prime is 31232040197. The next prime is 31232040247. The reversal of 31232040213 is 31204023213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31232040213 - 2⁴ = 31232040197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31232040213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232040283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473212698 + ... + 473212763.

It is an arithmetic number, because the mean of its divisors is an integer number (5678552772).

Almost surely, 2^31232040213 is an apocalyptic number.

31232040213 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31232040213 is a deficient number, since it is larger than the sum of its proper divisors (14196381963).

31232040213 is a wasteful number, since it uses less digits than its factorization.

31232040213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946425475.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31232040213 its reverse (31204023213), we get a palindrome (62436063426).

The spelling of 31232040213 in words is "thirty-one billion, two hundred thirty-two million, forty thousand, two hundred thirteen".