31384453253 has 4 divisors (see below), whose sum is σ = 33230597580. Its totient is φ = 29538308928.

The previous prime is 31384453231. The next prime is 31384453259. The reversal of 31384453253 is 35235448313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14635434529 + 16749018724 = 120977^2 + 129418^2 .

It is not a de Polignac number, because 31384453253 - 2²⁰ = 31383404677 is a prime.

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 31384453253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31384453259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 923072138 + ... + 923072171.

It is an arithmetic number, because the mean of its divisors is an integer number (8307649395).

Almost surely, 2^31384453253 is an apocalyptic number.

It is an amenable number.

31384453253 is a deficient number, since it is larger than the sum of its proper divisors (1846144327).

31384453253 is a wasteful number, since it uses less digits than its factorization.

31384453253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846144326.

The product of its digits is 518400, while the sum is 41.

The spelling of 31384453253 in words is "thirty-one billion, three hundred eighty-four million, four hundred fifty-three thousand, two hundred fifty-three".