31120000022 has 32 divisors (see below), whose sum is σ = 49357987200. Its totient is φ = 14674867200.

The previous prime is 31120000013. The next prime is 31120000027. The reversal of 31120000022 is 22000002113.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31119999958 and 31120000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120000027) 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, 9229997 + ... + 9233367.

It is an arithmetic number, because the mean of its divisors is an integer number (1542437100).

Almost surely, 2^31120000022 is an apocalyptic number.

31120000022 is a deficient number, since it is larger than the sum of its proper divisors (18237987178).

31120000022 is a wasteful number, since it uses less digits than its factorization.

31120000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4412.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 31120000022 its reverse (22000002113), we get a palindrome (53120002135).

The spelling of 31120000022 in words is "thirty-one billion, one hundred twenty million, twenty-two", and thus it is an aban number.