31013304213221 has 8 divisors (see below), whose sum is σ = 34657883201088. Its totient is φ = 27506256508000.

The previous prime is 31013304213209. The next prime is 31013304213247. The reversal of 31013304213221 is 12231240331013.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31013304213221 - 2¹⁴ = 31013304196837 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 (31013304213821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34382820185 + ... + 34382821086.

It is an arithmetic number, because the mean of its divisors is an integer number (4332235400136).

Almost surely, 2^{31013304213221} is an apocalyptic number.

It is an amenable number.

31013304213221 is a deficient number, since it is larger than the sum of its proper divisors (3644578987867).

31013304213221 is a wasteful number, since it uses less digits than its factorization.

31013304213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68765641323.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 31013304213221 its reverse (12231240331013), we get a palindrome (43244544544234).

The spelling of 31013304213221 in words is "thirty-one trillion, thirteen billion, three hundred four million, two hundred thirteen thousand, two hundred twenty-one".