31230322313 has 4 divisors (see below), whose sum is σ = 31230866640. Its totient is φ = 31229777988.

The previous prime is 31230322283. The next prime is 31230322349. The reversal of 31230322313 is 31322303213.

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 31230322313 - 2²² = 31226128009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31230327313) 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, 174395 + ... + 304752.

It is an arithmetic number, because the mean of its divisors is an integer number (7807716660).

Almost surely, 2^31230322313 is an apocalyptic number.

It is an amenable number.

31230322313 is a deficient number, since it is larger than the sum of its proper divisors (544327).

31230322313 is an equidigital number, since it uses as much as digits as its factorization.

31230322313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544326.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31230322313 its reverse (31322303213), we get a palindrome (62552625526).

The spelling of 31230322313 in words is "thirty-one billion, two hundred thirty million, three hundred twenty-two thousand, three hundred thirteen".