31231110023 has 8 divisors (see below), whose sum is σ = 33076129680. Its totient is φ = 29386967680.

The previous prime is 31231110017. The next prime is 31231110101. The reversal of 31231110023 is 32001113213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31231110023 - 2¹⁶ = 31231044487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31231109983 and 31231110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31231170023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145313 + ... + 289098.

It is an arithmetic number, because the mean of its divisors is an integer number (4134516210).

Almost surely, 2^31231110023 is an apocalyptic number.

31231110023 is a deficient number, since it is larger than the sum of its proper divisors (1845019657).

31231110023 is a wasteful number, since it uses less digits than its factorization.

31231110023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438657.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31231110023 its reverse (32001113213), we get a palindrome (63232223236).

The spelling of 31231110023 in words is "thirty-one billion, two hundred thirty-one million, one hundred ten thousand, twenty-three".