31101132313 has 4 divisors (see below), whose sum is σ = 31124712960. Its totient is φ = 31077551668.

The previous prime is 31101132299. The next prime is 31101132329. The reversal of 31101132313 is 31323110113.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31323110113 = 17 ⋅1842535889.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31101132313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31101132353) 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, 11788345 + ... + 11790982.

It is an arithmetic number, because the mean of its divisors is an integer number (7781178240).

Almost surely, 2^31101132313 is an apocalyptic number.

It is an amenable number.

31101132313 is a deficient number, since it is larger than the sum of its proper divisors (23580647).

31101132313 is a wasteful number, since it uses less digits than its factorization.

31101132313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23580646.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31101132313 its reverse (31323110113), we get a palindrome (62424242426).

The spelling of 31101132313 in words is "thirty-one billion, one hundred one million, one hundred thirty-two thousand, three hundred thirteen".