387169331 has 2 divisors, whose sum is σ = 387169332. Its totient is φ = 387169330.

The previous prime is 387169309. The next prime is 387169411. The reversal of 387169331 is 133961783.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 387169331 - 2⁶ = 387169267 is a prime.

It is a super-2 number, since 2×387169331² = 299800181733975122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (387169231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193584665 + 193584666.

It is an arithmetic number, because the mean of its divisors is an integer number (193584666).

Almost surely, 2^387169331 is an apocalyptic number.

387169331 is a deficient number, since it is larger than the sum of its proper divisors (1).

387169331 is an equidigital number, since it uses as much as digits as its factorization.

387169331 is an evil number, because the sum of its binary digits is even.

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

The square root of 387169331 is about 19676.6188914661. The cubic root of 387169331 is about 728.8424332501.

The spelling of 387169331 in words is "three hundred eighty-seven million, one hundred sixty-nine thousand, three hundred thirty-one".