31123303122 has 32 divisors (see below), whose sum is σ = 63138614400. Its totient is φ = 10225837440.

The previous prime is 31123303109. The next prime is 31123303147. The reversal of 31123303122 is 22130332113.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2786004 + ... + 2797152.

It is an arithmetic number, because the mean of its divisors is an integer number (1973081700).

Almost surely, 2^31123303122 is an apocalyptic number.

31123303122 is an abundant number, since it is smaller than the sum of its proper divisors (32015311278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31123303122 is a wasteful number, since it uses less digits than its factorization.

31123303122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17778.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31123303122 its reverse (22130332113), we get a palindrome (53253635235).

The spelling of 31123303122 in words is "thirty-one billion, one hundred twenty-three million, three hundred three thousand, one hundred twenty-two".