408078131 has 2 divisors, whose sum is σ = 408078132. Its totient is φ = 408078130.

The previous prime is 408078119. The next prime is 408078137. The reversal of 408078131 is 131870804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 408078131 - 2¹⁴ = 408061747 is a prime.

It is a super-2 number, since 2×408078131² = 333055522000906322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (408078137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204039065 + 204039066.

It is an arithmetic number, because the mean of its divisors is an integer number (204039066).

Almost surely, 2^408078131 is an apocalyptic number.

408078131 is a deficient number, since it is larger than the sum of its proper divisors (1).

408078131 is an equidigital number, since it uses as much as digits as its factorization.

408078131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 408078131 is about 20200.9438145845. The cubic root of 408078131 is about 741.7332945123.

The spelling of 408078131 in words is "four hundred eight million, seventy-eight thousand, one hundred thirty-one".