731161377 has 8 divisors (see below), whose sum is σ = 1083202080. Its totient is φ = 487440900.

The previous prime is 731161373. The next prime is 731161397. The reversal of 731161377 is 773161137.

731161377 is a `hidden beast` number, since 7 + 31 + 1 + 613 + 7 + 7 = 666.

It is not a de Polignac number, because 731161377 - 2² = 731161373 is a prime.

It is a super-2 number, since 2×731161377² = 1069193918433072258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (731161373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13539999 + ... + 13540052.

It is an arithmetic number, because the mean of its divisors is an integer number (135400260).

Almost surely, 2^731161377 is an apocalyptic number.

It is an amenable number.

731161377 is a deficient number, since it is larger than the sum of its proper divisors (352040703).

731161377 is a wasteful number, since it uses less digits than its factorization.

731161377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27080060 (or 27080054 counting only the distinct ones).

The product of its digits is 18522, while the sum is 36.

The square root of 731161377 is about 27039.9958764790. The cubic root of 731161377 is about 900.8885779659. Note that the first 3 decimals are identical.

The spelling of 731161377 in words is "seven hundred thirty-one million, one hundred sixty-one thousand, three hundred seventy-seven".