31012163323 has 4 divisors (see below), whose sum is σ = 31025833360. Its totient is φ = 30998493288.

The previous prime is 31012163309. The next prime is 31012163341. The reversal of 31012163323 is 32336121013.

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 31012163323 - 2²⁵ = 30978608891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31012113323) 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, 6831615 + ... + 6836152.

It is an arithmetic number, because the mean of its divisors is an integer number (7756458340).

Almost surely, 2^31012163323 is an apocalyptic number.

31012163323 is a deficient number, since it is larger than the sum of its proper divisors (13670037).

31012163323 is a wasteful number, since it uses less digits than its factorization.

31012163323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13670036.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31012163323 its reverse (32336121013), we get a palindrome (63348284336).

The spelling of 31012163323 in words is "thirty-one billion, twelve million, one hundred sixty-three thousand, three hundred twenty-three".