31201313323 has 4 divisors (see below), whose sum is σ = 31628728648. Its totient is φ = 30773898000.

The previous prime is 31201313317. The next prime is 31201313359. The reversal of 31201313323 is 32331310213.

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

It is a cyclic number.

It is not a de Polignac number, because 31201313323 - 2²⁵ = 31167758891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31201313294 and 31201313303.

It is not an unprimeable number, because it can be changed into a prime (31201313383) 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, 213707553 + ... + 213707698.

It is an arithmetic number, because the mean of its divisors is an integer number (7907182162).

Almost surely, 2^31201313323 is an apocalyptic number.

31201313323 is a deficient number, since it is larger than the sum of its proper divisors (427415325).

31201313323 is an equidigital number, since it uses as much as digits as its factorization.

31201313323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427415324.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31201313323 its reverse (32331310213), we get a palindrome (63532623536).

The spelling of 31201313323 in words is "thirty-one billion, two hundred one million, three hundred thirteen thousand, three hundred twenty-three".