31023312213219 has 4 divisors (see below), whose sum is σ = 41364416284296. Its totient is φ = 20682208142144.

The previous prime is 31023312213199. The next prime is 31023312213287. The reversal of 31023312213219 is 91231221332013.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31023312213219 - 2¹⁹ = 31023311688931 is a prime.

It is a super-2 number, since 2×31023312213219² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31023312213219.

It is not an unprimeable number, because it can be changed into a prime (31023312213119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5170552035534 + ... + 5170552035539.

It is an arithmetic number, because the mean of its divisors is an integer number (10341104071074).

Almost surely, 2^{31023312213219} is an apocalyptic number.

31023312213219 is a deficient number, since it is larger than the sum of its proper divisors (10341104071077).

31023312213219 is a wasteful number, since it uses less digits than its factorization.

31023312213219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10341104071076.

The product of its (nonzero) digits is 11664, while the sum is 33.

The spelling of 31023312213219 in words is "thirty-one trillion, twenty-three billion, three hundred twelve million, two hundred thirteen thousand, two hundred nineteen".