690530933831 has 2 divisors, whose sum is σ = 690530933832. Its totient is φ = 690530933830.

The previous prime is 690530933797. The next prime is 690530933857. The reversal of 690530933831 is 138339035096.

690530933831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 690530933831 - 2⁶ = 690530933767 is a prime.

It is a super-2 number, since 2×690530933831² (a number of 24 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 690530933831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (690530933731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345265466915 + 345265466916.

It is an arithmetic number, because the mean of its divisors is an integer number (345265466916).

Almost surely, 2^690530933831 is an apocalyptic number.

690530933831 is a deficient number, since it is larger than the sum of its proper divisors (1).

690530933831 is an equidigital number, since it uses as much as digits as its factorization.

690530933831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1574640, while the sum is 50.

The spelling of 690530933831 in words is "six hundred ninety billion, five hundred thirty million, nine hundred thirty-three thousand, eight hundred thirty-one".