31345243353 has 24 divisors (see below), whose sum is σ = 47409264448. Its totient is φ = 20693930544.

The previous prime is 31345243339. The next prime is 31345243361. The reversal of 31345243353 is 35334254313.

31345243353 is a `hidden beast` number, since 31 + 34 + 5 + 243 + 353 = 666.

It is not a de Polignac number, because 31345243353 - 2²² = 31341049049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31345243333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 601150 + ... + 651207.

Almost surely, 2^31345243353 is an apocalyptic number.

It is an amenable number.

31345243353 is a deficient number, since it is larger than the sum of its proper divisors (16064021095).

31345243353 is a wasteful number, since it uses less digits than its factorization.

31345243353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252475 (or 1252463 counting only the distinct ones).

The product of its digits is 194400, while the sum is 36.

Adding to 31345243353 its reverse (35334254313), we get a palindrome (66679497666).

The spelling of 31345243353 in words is "thirty-one billion, three hundred forty-five million, two hundred forty-three thousand, three hundred fifty-three".