31105032514213 has 16 divisors (see below), whose sum is σ = 35670899646976. Its totient is φ = 26569846385280.

The previous prime is 31105032514147. The next prime is 31105032514249. The reversal of 31105032514213 is 31241523050113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31105032514213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31105032554213) 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, 1059981 + ... + 7958242.

It is an arithmetic number, because the mean of its divisors is an integer number (2229431227936).

Almost surely, 2^{31105032514213} is an apocalyptic number.

It is an amenable number.

31105032514213 is a deficient number, since it is larger than the sum of its proper divisors (4565867132763).

31105032514213 is a wasteful number, since it uses less digits than its factorization.

31105032514213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9019924.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 31105032514213 its reverse (31241523050113), we get a palindrome (62346555564326).

The spelling of 31105032514213 in words is "thirty-one trillion, one hundred five billion, thirty-two million, five hundred fourteen thousand, two hundred thirteen".