31020002132239 has 2 divisors, whose sum is σ = 31020002132240. Its totient is φ = 31020002132238.

The previous prime is 31020002132183. The next prime is 31020002132297. The reversal of 31020002132239 is 93223120002013.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31020002132239 - 2¹³ = 31020002124047 is a prime.

It is a super-2 number, since 2×31020002132239² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31020002432239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510001066119 + 15510001066120.

It is an arithmetic number, because the mean of its divisors is an integer number (15510001066120).

Almost surely, 2^{31020002132239} is an apocalyptic number.

31020002132239 is a deficient number, since it is larger than the sum of its proper divisors (1).

31020002132239 is an equidigital number, since it uses as much as digits as its factorization.

31020002132239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 31020002132239 in words is "thirty-one trillion, twenty billion, two million, one hundred thirty-two thousand, two hundred thirty-nine".