133379431 has 2 divisors, whose sum is σ = 133379432. Its totient is φ = 133379430.

The previous prime is 133379383. The next prime is 133379479. The reversal of 133379431 is 134973331.

It is a balanced prime because it is at equal distance from previous prime (133379383) and next prime (133379479).

It is a cyclic number.

It is not a de Polignac number, because 133379431 - 2⁷ = 133379303 is a prime.

It is a super-2 number, since 2×133379431² = 35580145227767522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133379131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66689715 + 66689716.

It is an arithmetic number, because the mean of its divisors is an integer number (66689716).

Almost surely, 2^133379431 is an apocalyptic number.

133379431 is a deficient number, since it is larger than the sum of its proper divisors (1).

133379431 is an equidigital number, since it uses as much as digits as its factorization.

133379431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 34.

The square root of 133379431 is about 11549.0012988137. The cubic root of 133379431 is about 510.9318232733.

The spelling of 133379431 in words is "one hundred thirty-three million, three hundred seventy-nine thousand, four hundred thirty-one".