31212032001223 has 4 divisors (see below), whose sum is σ = 31243978810800. Its totient is φ = 31180085191648.

The previous prime is 31212032001209. The next prime is 31212032001251. The reversal of 31212032001223 is 32210023021213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31212032001223 - 2²⁵ = 31211998446791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31212032001194 and 31212032001203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212032001203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15973403323 + ... + 15973405276.

It is an arithmetic number, because the mean of its divisors is an integer number (7810994702700).

Almost surely, 2^{31212032001223} is an apocalyptic number.

31212032001223 is a deficient number, since it is larger than the sum of its proper divisors (31946809577).

31212032001223 is an equidigital number, since it uses as much as digits as its factorization.

31212032001223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31946809576.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31212032001223 its reverse (32210023021213), we get a palindrome (63422055022436).

The spelling of 31212032001223 in words is "thirty-one trillion, two hundred twelve billion, thirty-two million, one thousand, two hundred twenty-three".