31120202001223 has 32 divisors (see below), whose sum is σ = 33786750715200. Its totient is φ = 28547918192640.

The previous prime is 31120202001211. The next prime is 31120202001277. The reversal of 31120202001223 is 32210020202113.

It is a cyclic number.

It is not a de Polignac number, because 31120202001223 - 2⁹ = 31120202000711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31120202001223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120202071223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4234613553 + ... + 4234620901.

It is an arithmetic number, because the mean of its divisors is an integer number (1055835959850).

Almost surely, 2^{31120202001223} is an apocalyptic number.

31120202001223 is a deficient number, since it is larger than the sum of its proper divisors (2666548713977).

31120202001223 is a wasteful number, since it uses less digits than its factorization.

31120202001223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12387.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31120202001223 its reverse (32210020202113), we get a palindrome (63330222203336).

The spelling of 31120202001223 in words is "thirty-one trillion, one hundred twenty billion, two hundred two million, one thousand, two hundred twenty-three".