31130213020123 has 16 divisors (see below), whose sum is σ = 37656785770240. Its totient is φ = 25139008044000.

The previous prime is 31130213020097. The next prime is 31130213020129. The reversal of 31130213020123 is 32102031203113.

It is a cyclic number.

It is not a de Polignac number, because 31130213020123 - 2²¹ = 31130210922971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31130213020094 and 31130213020103.

It is not an unprimeable number, because it can be changed into a prime (31130213020129) 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, 646555353 + ... + 646603498.

It is an arithmetic number, because the mean of its divisors is an integer number (2353549110640).

Almost surely, 2^{31130213020123} is an apocalyptic number.

31130213020123 is a deficient number, since it is larger than the sum of its proper divisors (6526572750117).

31130213020123 is a wasteful number, since it uses less digits than its factorization.

31130213020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293159058.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31130213020123 its reverse (32102031203113), we get a palindrome (63232244223236).

The spelling of 31130213020123 in words is "thirty-one trillion, one hundred thirty billion, two hundred thirteen million, twenty thousand, one hundred twenty-three".