133796831 has 4 divisors (see below), whose sum is σ = 152910672. Its totient is φ = 114682992.

The previous prime is 133796801. The next prime is 133796843. The reversal of 133796831 is 138697331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133796831 is a prime.

It is a super-2 number, since 2×133796831² = 35803183971285122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133796801) 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, 9556910 + ... + 9556923.

It is an arithmetic number, because the mean of its divisors is an integer number (38227668).

Almost surely, 2^133796831 is an apocalyptic number.

133796831 is a deficient number, since it is larger than the sum of its proper divisors (19113841).

133796831 is an equidigital number, since it uses as much as digits as its factorization.

133796831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19113840.

The product of its digits is 81648, while the sum is 41.

The square root of 133796831 is about 11567.0580097102. The cubic root of 133796831 is about 511.4642413641.

The spelling of 133796831 in words is "one hundred thirty-three million, seven hundred ninety-six thousand, eight hundred thirty-one".