31023201123 has 40 divisors (see below), whose sum is σ = 47376552960. Its totient is φ = 20221896240.

The previous prime is 31023201023. The next prime is 31023201127. The reversal of 31023201123 is 32110232013.

31023201123 is a `hidden beast` number, since 310 + 2 + 320 + 11 + 23 = 666.

It is not a de Polignac number, because 31023201123 - 2⁸ = 31023200867 is a prime.

It is a super-2 number, since 2×31023201123² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31023201096 and 31023201105.

It is not an unprimeable number, because it can be changed into a prime (31023201127) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4454518 + ... + 4461476.

It is an arithmetic number, because the mean of its divisors is an integer number (1184413824).

Almost surely, 2^31023201123 is an apocalyptic number.

31023201123 is a deficient number, since it is larger than the sum of its proper divisors (16353351837).

31023201123 is a wasteful number, since it uses less digits than its factorization.

31023201123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8189 (or 8180 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31023201123 its reverse (32110232013), we get a palindrome (63133433136).

The spelling of 31023201123 in words is "thirty-one billion, twenty-three million, two hundred one thousand, one hundred twenty-three".