797157331 has 4 divisors (see below), whose sum is σ = 839113000. Its totient is φ = 755201664.

The previous prime is 797157329. The next prime is 797157359. The reversal of 797157331 is 133751797.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 797157331 - 2¹ = 797157329 is a prime.

It is a super-2 number, since 2×797157331² = 1270919620734087122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (797157371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20977806 + ... + 20977843.

It is an arithmetic number, because the mean of its divisors is an integer number (209778250).

Almost surely, 2^797157331 is an apocalyptic number.

797157331 is a deficient number, since it is larger than the sum of its proper divisors (41955669).

797157331 is a wasteful number, since it uses less digits than its factorization.

797157331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41955668.

The product of its digits is 138915, while the sum is 43.

The square root of 797157331 is about 28233.9747644571. The cubic root of 797157331 is about 927.2169200744.

The spelling of 797157331 in words is "seven hundred ninety-seven million, one hundred fifty-seven thousand, three hundred thirty-one".