31312323123122 has 4 divisors (see below), whose sum is σ = 46968484684686. Its totient is φ = 15656161561560.

The previous prime is 31312323123079. The next prime is 31312323123227. The reversal of 31312323123122 is 22132132321313.

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

It can be written as a sum of positive squares in only one way, i.e., 15930403846681 + 15381919276441 = 3991291^2 + 3921979^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7828080780779 + ... + 7828080780782.

Almost surely, 2^{31312323123122} is an apocalyptic number.

31312323123122 is a deficient number, since it is larger than the sum of its proper divisors (15656161561564).

31312323123122 is a wasteful number, since it uses less digits than its factorization.

31312323123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15656161561563.

The product of its digits is 7776, while the sum is 29.

Adding to 31312323123122 its reverse (22132132321313), we get a palindrome (53444455444435).

The spelling of 31312323123122 in words is "thirty-one trillion, three hundred twelve billion, three hundred twenty-three million, one hundred twenty-three thousand, one hundred twenty-two".