31100100022 has 4 divisors (see below), whose sum is σ = 46650150036. Its totient is φ = 15550050010.

The previous prime is 31100099983. The next prime is 31100100041. The reversal of 31100100022 is 22000100113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22000100113 = 19559 ⋅1124807.

It is a junction number, because it is equal to n+sod(n) for n = 31100099981 and 31100100008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7775025004 + ... + 7775025007.

It is an arithmetic number, because the mean of its divisors is an integer number (11662537509).

Almost surely, 2^31100100022 is an apocalyptic number.

31100100022 is a deficient number, since it is larger than the sum of its proper divisors (15550050014).

31100100022 is a wasteful number, since it uses less digits than its factorization.

31100100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15550050013.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 31100100022 its reverse (22000100113), we get a palindrome (53100200135).

Subtracting from 31100100022 its reverse (22000100113), we obtain a palindrome (9099999909).

The spelling of 31100100022 in words is "thirty-one billion, one hundred million, one hundred thousand, twenty-two".