31013102122 has 4 divisors (see below), whose sum is σ = 46519653186. Its totient is φ = 15506551060.

The previous prime is 31013102101. The next prime is 31013102123. The reversal of 31013102122 is 22120131013.

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., 30425476041 + 587626081 = 174429^2 + 24241^2 .

It is a super-3 number, since 3×31013102122³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31013102096 and 31013102105.

It is not an unprimeable number, because it can be changed into a prime (31013102123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7753275529 + ... + 7753275532.

Almost surely, 2^31013102122 is an apocalyptic number.

31013102122 is a deficient number, since it is larger than the sum of its proper divisors (15506551064).

31013102122 is a wasteful number, since it uses less digits than its factorization.

31013102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15506551063.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31013102122 its reverse (22120131013), we get a palindrome (53133233135).

The spelling of 31013102122 in words is "thirty-one billion, thirteen million, one hundred two thousand, one hundred twenty-two".