31013120303221 has 8 divisors (see below), whose sum is σ = 35443608576320. Its totient is φ = 26582642659008.

The previous prime is 31013120303177. The next prime is 31013120303233. The reversal of 31013120303221 is 12230302131013.

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 31013120303221 - 2¹³ = 31013120295029 is a prime.

It is a super-2 number, since 2×31013120303221² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31013120303192 and 31013120303201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31013120303281) 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, 5108125 + ... + 9387181.

It is an arithmetic number, because the mean of its divisors is an integer number (4430451072040).

Almost surely, 2^{31013120303221} is an apocalyptic number.

It is an amenable number.

31013120303221 is a deficient number, since it is larger than the sum of its proper divisors (4430488273099).

31013120303221 is a wasteful number, since it uses less digits than its factorization.

31013120303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5314443.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31013120303221 its reverse (12230302131013), we get a palindrome (43243422434234).

The spelling of 31013120303221 in words is "thirty-one trillion, thirteen billion, one hundred twenty million, three hundred three thousand, two hundred twenty-one".