475145131 has 2 divisors, whose sum is σ = 475145132. Its totient is φ = 475145130.

The previous prime is 475145123. The next prime is 475145147. The reversal of 475145131 is 131541574.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 475145131 - 2³ = 475145123 is a prime.

It is a super-2 number, since 2×475145131² = 451525791026014322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 475145093 and 475145102.

It is not a weakly prime, because it can be changed into another prime (475115131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237572565 + 237572566.

It is an arithmetic number, because the mean of its divisors is an integer number (237572566).

Almost surely, 2^475145131 is an apocalyptic number.

475145131 is a deficient number, since it is larger than the sum of its proper divisors (1).

475145131 is an equidigital number, since it uses as much as digits as its factorization.

475145131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 31.

The square root of 475145131 is about 21797.8239969039. The cubic root of 475145131 is about 780.3248323790.

The spelling of 475145131 in words is "four hundred seventy-five million, one hundred forty-five thousand, one hundred thirty-one".