31132012219 has 32 divisors (see below), whose sum is σ = 39235046400. Its totient is φ = 23996269440.

The previous prime is 31132012193. The next prime is 31132012231. The reversal of 31132012219 is 91221023113.

It is not a de Polignac number, because 31132012219 - 2¹⁵ = 31131979451 is a prime.

It is a super-2 number, since 2×31132012219² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31132012193 and 31132012202.

It is not an unprimeable number, because it can be changed into a prime (31132012819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5679322 + ... + 5684800.

It is an arithmetic number, because the mean of its divisors is an integer number (1226095200).

Almost surely, 2^31132012219 is an apocalyptic number.

31132012219 is a deficient number, since it is larger than the sum of its proper divisors (8103034181).

31132012219 is a wasteful number, since it uses less digits than its factorization.

31132012219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6283.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 31132012219 in words is "thirty-one billion, one hundred thirty-two million, twelve thousand, two hundred nineteen".