31143310023 has 32 divisors (see below), whose sum is σ = 47701926400. Its totient is φ = 17704262016.

The previous prime is 31143309971. The next prime is 31143310027. The reversal of 31143310023 is 32001334113.

It is not a de Polignac number, because 31143310023 - 2¹⁴ = 31143293639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143310027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10015593 + ... + 10018701.

It is an arithmetic number, because the mean of its divisors is an integer number (1490685200).

Almost surely, 2^31143310023 is an apocalyptic number.

31143310023 is a deficient number, since it is larger than the sum of its proper divisors (16558616377).

31143310023 is a wasteful number, since it uses less digits than its factorization.

31143310023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5431.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31143310023 its reverse (32001334113), we get a palindrome (63144644136).

The spelling of 31143310023 in words is "thirty-one billion, one hundred forty-three million, three hundred ten thousand, twenty-three".