133031377 has 2 divisors, whose sum is σ = 133031378. Its totient is φ = 133031376.

The previous prime is 133031299. The next prime is 133031419. The reversal of 133031377 is 773130331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101626561 + 31404816 = 10081^2 + 5604^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133031377 is a prime.

It is a super-2 number, since 2×133031377² = 35394694533032258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133031077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66515688 + 66515689.

It is an arithmetic number, because the mean of its divisors is an integer number (66515689).

Almost surely, 2^133031377 is an apocalyptic number.

It is an amenable number.

133031377 is a deficient number, since it is larger than the sum of its proper divisors (1).

133031377 is an equidigital number, since it uses as much as digits as its factorization.

133031377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3969, while the sum is 28.

The square root of 133031377 is about 11533.9228799225. The cubic root of 133031377 is about 510.4870101254.

The spelling of 133031377 in words is "one hundred thirty-three million, thirty-one thousand, three hundred seventy-seven".