31102223113 has 8 divisors (see below), whose sum is σ = 33496162056. Its totient is φ = 28708492800.

The previous prime is 31102223099. The next prime is 31102223143. The reversal of 31102223113 is 31132220113.

It can be written as a sum of positive squares in 4 ways, for example, as 1065173769 + 30037049344 = 32637^2 + 173312^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-31102223113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31102223143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407673 + ... + 477913.

It is an arithmetic number, because the mean of its divisors is an integer number (4187020257).

Almost surely, 2^31102223113 is an apocalyptic number.

It is an amenable number.

31102223113 is a deficient number, since it is larger than the sum of its proper divisors (2393938943).

31102223113 is a wasteful number, since it uses less digits than its factorization.

31102223113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104315.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31102223113 its reverse (31132220113), we get a palindrome (62234443226).

The spelling of 31102223113 in words is "thirty-one billion, one hundred two million, two hundred twenty-three thousand, one hundred thirteen".