31424031223 has 16 divisors (see below), whose sum is σ = 34588342656. Its totient is φ = 28367412480.

The previous prime is 31424031187. The next prime is 31424031229. The reversal of 31424031223 is 32213042413.

It is a cyclic number.

It is not a de Polignac number, because 31424031223 - 2³³ = 22834096631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31424031229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 787665 + ... + 826597.

It is an arithmetic number, because the mean of its divisors is an integer number (2161771416).

Almost surely, 2^31424031223 is an apocalyptic number.

31424031223 is a deficient number, since it is larger than the sum of its proper divisors (3164311433).

31424031223 is a wasteful number, since it uses less digits than its factorization.

31424031223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40314.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31424031223 its reverse (32213042413), we get a palindrome (63637073636).

The spelling of 31424031223 in words is "thirty-one billion, four hundred twenty-four million, thirty-one thousand, two hundred twenty-three".