478746131 has 2 divisors, whose sum is σ = 478746132. Its totient is φ = 478746130.

The previous prime is 478746109. The next prime is 478746137. The reversal of 478746131 is 131647874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478746131 - 2⁶ = 478746067 is a prime.

It is a super-2 number, since 2×478746131² = 458395715894938322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (478746137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239373065 + 239373066.

It is an arithmetic number, because the mean of its divisors is an integer number (239373066).

Almost surely, 2^478746131 is an apocalyptic number.

478746131 is a deficient number, since it is larger than the sum of its proper divisors (1).

478746131 is an equidigital number, since it uses as much as digits as its factorization.

478746131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 478746131 is about 21880.2680742261. The cubic root of 478746131 is about 782.2911655076.

The spelling of 478746131 in words is "four hundred seventy-eight million, seven hundred forty-six thousand, one hundred thirty-one".