231022032313 has 4 divisors (see below), whose sum is σ = 238474355968. Its totient is φ = 223569708660.

The previous prime is 231022032277. The next prime is 231022032331. The reversal of 231022032313 is 313230220132.

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 a de Polignac number, because none of the positive numbers 2^k-231022032313 is a prime.

It is a super-2 number, since 2×231022032313² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231022032713) 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, 3726161781 + ... + 3726161842.

It is an arithmetic number, because the mean of its divisors is an integer number (59618588992).

Almost surely, 2^231022032313 is an apocalyptic number.

It is an amenable number.

231022032313 is a deficient number, since it is larger than the sum of its proper divisors (7452323655).

231022032313 is an equidigital number, since it uses as much as digits as its factorization.

231022032313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7452323654.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 231022032313 its reverse (313230220132), we get a palindrome (544252252445).

The spelling of 231022032313 in words is "two hundred thirty-one billion, twenty-two million, thirty-two thousand, three hundred thirteen".