997502699831 has 8 divisors (see below), whose sum is σ = 1088203054224. Its totient is φ = 906805393920.

The previous prime is 997502699801. The next prime is 997502699849. The reversal of 997502699831 is 138996205799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 997502699831 - 2³⁴ = 980322830647 is a prime.

It is a super-2 number, since 2×997502699831² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997502699801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48920 + ... + 1413293.

It is an arithmetic number, because the mean of its divisors is an integer number (136025381778).

Almost surely, 2^997502699831 is an apocalyptic number.

997502699831 is a deficient number, since it is larger than the sum of its proper divisors (90700354393).

997502699831 is a wasteful number, since it uses less digits than its factorization.

997502699831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524241.

The product of its (nonzero) digits is 66134880, while the sum is 68.

The spelling of 997502699831 in words is "nine hundred ninety-seven billion, five hundred two million, six hundred ninety-nine thousand, eight hundred thirty-one".