31223002023 has 12 divisors (see below), whose sum is σ = 45296837560. Its totient is φ = 20724436656.

The previous prime is 31223001991. The next prime is 31223002049. The reversal of 31223002023 is 32020032213.

It is a happy number.

It is not a de Polignac number, because 31223002023 - 2⁵ = 31223001991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31223001987 and 31223002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223000023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7572661 + ... + 7576782.

Almost surely, 2^31223002023 is an apocalyptic number.

31223002023 is a deficient number, since it is larger than the sum of its proper divisors (14073835537).

31223002023 is a wasteful number, since it uses less digits than its factorization.

31223002023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15149678 (or 15149675 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 31223002023 its reverse (32020032213), we get a palindrome (63243034236).

The spelling of 31223002023 in words is "thirty-one billion, two hundred twenty-three million, two thousand, twenty-three".