31211323219 has 6 divisors (see below), whose sum is σ = 32627338436. Its totient is φ = 29854308660.

The previous prime is 31211323177. The next prime is 31211323259. The reversal of 31211323219 is 91232311213.

It is not a de Polignac number, because 31211323219 - 2²¹ = 31209226067 is a prime.

It is a super-2 number, since 2×31211323219² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31211323259) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29499777 + ... + 29500834.

Almost surely, 2^31211323219 is an apocalyptic number.

31211323219 is a deficient number, since it is larger than the sum of its proper divisors (1416015217).

31211323219 is an equidigital number, since it uses as much as digits as its factorization.

31211323219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59000657 (or 59000634 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

The spelling of 31211323219 in words is "thirty-one billion, two hundred eleven million, three hundred twenty-three thousand, two hundred nineteen".