31212112023 has 16 divisors (see below), whose sum is σ = 46270828800. Its totient is φ = 20794276440.

The previous prime is 31212111971. The next prime is 31212112033. The reversal of 31212112023 is 32021121213.

It is not a de Polignac number, because 31212112023 - 2¹⁶ = 31212046487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31212111987 and 31212112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212112033) 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, 341733 + ... + 423326.

It is an arithmetic number, because the mean of its divisors is an integer number (2891926800).

Almost surely, 2^31212112023 is an apocalyptic number.

31212112023 is a deficient number, since it is larger than the sum of its proper divisors (15058716777).

31212112023 is a wasteful number, since it uses less digits than its factorization.

31212112023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766579 (or 766573 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31212112023 its reverse (32021121213), we get a palindrome (63233233236).

The spelling of 31212112023 in words is "thirty-one billion, two hundred twelve million, one hundred twelve thousand, twenty-three".