31640502321253 has 8 divisors (see below), whose sum is σ = 36176316622272. Its totient is φ = 27108623655456.

The previous prime is 31640502321139. The next prime is 31640502321277. The reversal of 31640502321253 is 35212320504613.

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

It is not a de Polignac number, because 31640502321253 - 2²⁵ = 31640468766821 is a prime.

It is a super-2 number, since 2×31640502321253² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31640502321053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983891575 + ... + 983923732.

It is an arithmetic number, because the mean of its divisors is an integer number (4522039577784).

Almost surely, 2^{31640502321253} is an apocalyptic number.

It is an amenable number.

31640502321253 is a deficient number, since it is larger than the sum of its proper divisors (4535814301019).

31640502321253 is a wasteful number, since it uses less digits than its factorization.

31640502321253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967817611.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 31640502321253 its reverse (35212320504613), we get a palindrome (66852822825866).

The spelling of 31640502321253 in words is "thirty-one trillion, six hundred forty billion, five hundred two million, three hundred twenty-one thousand, two hundred fifty-three".