31113123422 has 4 divisors (see below), whose sum is σ = 46669685136. Its totient is φ = 15556561710.

The previous prime is 31113123421. The next prime is 31113123439. The reversal of 31113123422 is 22432131113.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113123421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7778280854 + ... + 7778280857.

It is an arithmetic number, because the mean of its divisors is an integer number (11667421284).

Almost surely, 2^31113123422 is an apocalyptic number.

31113123422 is a deficient number, since it is larger than the sum of its proper divisors (15556561714).

31113123422 is a wasteful number, since it uses less digits than its factorization.

31113123422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15556561713.

The product of its digits is 864, while the sum is 23.

Adding to 31113123422 its reverse (22432131113), we get a palindrome (53545254535).

The spelling of 31113123422 in words is "thirty-one billion, one hundred thirteen million, one hundred twenty-three thousand, four hundred twenty-two".