31252312142123 has 4 divisors (see below), whose sum is σ = 31341860314800. Its totient is φ = 31162763969448.

The previous prime is 31252312142111. The next prime is 31252312142167. The reversal of 31252312142123 is 32124121325213.

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 31252312142123 - 2⁶ = 31252312142059 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 31252312142123.

It is not an unprimeable number, because it can be changed into a prime (31252312142423) 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, 44774085815 + ... + 44774086512.

It is an arithmetic number, because the mean of its divisors is an integer number (7835465078700).

Almost surely, 2^{31252312142123} is an apocalyptic number.

31252312142123 is a deficient number, since it is larger than the sum of its proper divisors (89548172677).

31252312142123 is an equidigital number, since it uses as much as digits as its factorization.

31252312142123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89548172676.

The product of its digits is 17280, while the sum is 32.

Adding to 31252312142123 its reverse (32124121325213), we get a palindrome (63376433467336).

The spelling of 31252312142123 in words is "thirty-one trillion, two hundred fifty-two billion, three hundred twelve million, one hundred forty-two thousand, one hundred twenty-three".