133831937 has 2 divisors, whose sum is σ = 133831938. Its totient is φ = 133831936.

The previous prime is 133831927. The next prime is 133832003. The reversal of 133831937 is 739138331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120318961 + 13512976 = 10969^2 + 3676^2 .

It is a cyclic number.

It is not a de Polignac number, because 133831937 - 2⁴ = 133831921 is a prime.

It is a super-2 number, since 2×133831937² = 35821974722343938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133831937.

It is not a weakly prime, because it can be changed into another prime (133831927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66915968 + 66915969.

It is an arithmetic number, because the mean of its divisors is an integer number (66915969).

Almost surely, 2^133831937 is an apocalyptic number.

It is an amenable number.

133831937 is a deficient number, since it is larger than the sum of its proper divisors (1).

133831937 is an equidigital number, since it uses as much as digits as its factorization.

133831937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 38.

The square root of 133831937 is about 11568.5754092714. The cubic root of 133831937 is about 511.5089706086.

The spelling of 133831937 in words is "one hundred thirty-three million, eight hundred thirty-one thousand, nine hundred thirty-seven".