31040250531919 has 2 divisors, whose sum is σ = 31040250531920. Its totient is φ = 31040250531918.

The previous prime is 31040250531889. The next prime is 31040250531929. The reversal of 31040250531919 is 91913505204013.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31040250531919 - 2¹⁵ = 31040250499151 is a prime.

It is a super-2 number, since 2×31040250531919² (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 (31040250531929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15520125265959 + 15520125265960.

It is an arithmetic number, because the mean of its divisors is an integer number (15520125265960).

Almost surely, 2^{31040250531919} is an apocalyptic number.

31040250531919 is a deficient number, since it is larger than the sum of its proper divisors (1).

31040250531919 is an equidigital number, since it uses as much as digits as its factorization.

31040250531919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 43.

The spelling of 31040250531919 in words is "thirty-one trillion, forty billion, two hundred fifty million, five hundred thirty-one thousand, nine hundred nineteen".