31102200313 has 4 divisors (see below), whose sum is σ = 31102634880. Its totient is φ = 31101765748.

The previous prime is 31102200307. The next prime is 31102200319. The reversal of 31102200313 is 31300220113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (31102200307) and next prime (31102200319).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31102200313 is a prime.

It is a super-3 number, since 3×31102200313³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31102200319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81745 + ... + 262462.

It is an arithmetic number, because the mean of its divisors is an integer number (7775658720).

Almost surely, 2^31102200313 is an apocalyptic number.

It is an amenable number.

31102200313 is a deficient number, since it is larger than the sum of its proper divisors (434567).

31102200313 is an equidigital number, since it uses as much as digits as its factorization.

31102200313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434566.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31102200313 its reverse (31300220113), we get a palindrome (62402420426).

The spelling of 31102200313 in words is "thirty-one billion, one hundred two million, two hundred thousand, three hundred thirteen".