31302321113 has 4 divisors (see below), whose sum is σ = 35774081280. Its totient is φ = 26830560948.

The previous prime is 31302321079. The next prime is 31302321131. The reversal of 31302321113 is 31112320313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31302321113 - 2²² = 31298126809 is a prime.

It is a super-2 number, since 2×31302321113² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31302321613) 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, 2235880073 + ... + 2235880086.

It is an arithmetic number, because the mean of its divisors is an integer number (8943520320).

Almost surely, 2^31302321113 is an apocalyptic number.

It is an amenable number.

31302321113 is a deficient number, since it is larger than the sum of its proper divisors (4471760167).

31302321113 is an equidigital number, since it uses as much as digits as its factorization.

31302321113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4471760166.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31302321113 its reverse (31112320313), we get a palindrome (62414641426).

The spelling of 31302321113 in words is "thirty-one billion, three hundred two million, three hundred twenty-one thousand, one hundred thirteen".