31323332100113 has 4 divisors (see below), whose sum is σ = 31323666712500. Its totient is φ = 31322997487728.

The previous prime is 31323332100101. The next prime is 31323332100161. The reversal of 31323332100113 is 31100123332313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23914222307089 + 7409109793024 = 4890217^2 + 2721968^2 .

It is a cyclic number.

It is not a de Polignac number, because 31323332100113 - 2⁴ = 31323332100097 is a prime.

It is a super-2 number, since 2×31323332100113² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31323332150113) 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, 167165738 + ... + 167353011.

It is an arithmetic number, because the mean of its divisors is an integer number (7830916678125).

Almost surely, 2^{31323332100113} is an apocalyptic number.

It is an amenable number.

31323332100113 is a deficient number, since it is larger than the sum of its proper divisors (334612387).

31323332100113 is an equidigital number, since it uses as much as digits as its factorization.

31323332100113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334612386.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 31323332100113 its reverse (31100123332313), we get a palindrome (62423455432426).

The spelling of 31323332100113 in words is "thirty-one trillion, three hundred twenty-three billion, three hundred thirty-two million, one hundred thousand, one hundred thirteen".