31423210023 has 32 divisors (see below), whose sum is σ = 44751268800. Its totient is φ = 19544145920.

The previous prime is 31423210009. The next prime is 31423210067. The reversal of 31423210023 is 32001232413.

It is a cyclic number.

It is not a de Polignac number, because 31423210023 - 2⁹ = 31423209511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31423210003) 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, 3955111 + ... + 3963047.

It is an arithmetic number, because the mean of its divisors is an integer number (1398477150).

Almost surely, 2^31423210023 is an apocalyptic number.

31423210023 is a deficient number, since it is larger than the sum of its proper divisors (13328058777).

31423210023 is a wasteful number, since it uses less digits than its factorization.

31423210023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8627.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31423210023 its reverse (32001232413), we get a palindrome (63424442436).

The spelling of 31423210023 in words is "thirty-one billion, four hundred twenty-three million, two hundred ten thousand, twenty-three".