31113311331201 has 16 divisors (see below), whose sum is σ = 45445080084480. Its totient is φ = 18777654608720.

The previous prime is 31113311331197. The next prime is 31113311331233. The reversal of 31113311331201 is 10213311331113.

It is a cyclic number.

It is not a de Polignac number, because 31113311331201 - 2² = 31113311331197 is a prime.

It is a super-2 number, since 2×31113311331201² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31113311331101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1972434825 + ... + 1972450598.

It is an arithmetic number, because the mean of its divisors is an integer number (2840317505280).

Almost surely, 2^{31113311331201} is an apocalyptic number.

It is an amenable number.

31113311331201 is a deficient number, since it is larger than the sum of its proper divisors (14331768753279).

31113311331201 is a wasteful number, since it uses less digits than its factorization.

31113311331201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944885676.

The product of its (nonzero) digits is 486, while the sum is 24.

Adding to 31113311331201 its reverse (10213311331113), we get a palindrome (41326622662314).

The spelling of 31113311331201 in words is "thirty-one trillion, one hundred thirteen billion, three hundred eleven million, three hundred thirty-one thousand, two hundred one".