31331130100213 has 16 divisors (see below), whose sum is σ = 32051001864960. Its totient is φ = 30619514952000.

The previous prime is 31331130100199. The next prime is 31331130100243. The reversal of 31331130100213 is 31200103113313.

It is a cyclic number.

It is not a de Polignac number, because 31331130100213 - 2¹³ = 31331130092021 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 (31331130100243) 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, 27503898 + ... + 28620388.

It is an arithmetic number, because the mean of its divisors is an integer number (2003187616560).

Almost surely, 2^{31331130100213} is an apocalyptic number.

It is an amenable number.

31331130100213 is a deficient number, since it is larger than the sum of its proper divisors (719871764747).

31331130100213 is a wasteful number, since it uses less digits than its factorization.

31331130100213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120188.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 31331130100213 its reverse (31200103113313), we get a palindrome (62531233213526).

The spelling of 31331130100213 in words is "thirty-one trillion, three hundred thirty-one billion, one hundred thirty million, one hundred thousand, two hundred thirteen".