31011212023 has 8 divisors (see below), whose sum is σ = 33832106496. Its totient is φ = 28190599800.

The previous prime is 31011212021. The next prime is 31011212033. The reversal of 31011212023 is 32021211013.

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

It is not a de Polignac number, because 31011212023 - 2¹ = 31011212021 is a prime.

It is a super-2 number, since 2×31011212023² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31011211988 and 31011212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31011212021) 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, 206490 + ... + 323512.

It is an arithmetic number, because the mean of its divisors is an integer number (4229013312).

Almost surely, 2^31011212023 is an apocalyptic number.

31011212023 is a deficient number, since it is larger than the sum of its proper divisors (2820894473).

31011212023 is a wasteful number, since it uses less digits than its factorization.

31011212023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141125.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31011212023 its reverse (32021211013), we get a palindrome (63032423036).

The spelling of 31011212023 in words is "thirty-one billion, eleven million, two hundred twelve thousand, twenty-three".