163025431 has 2 divisors, whose sum is σ = 163025432. Its totient is φ = 163025430.

The previous prime is 163025419. The next prime is 163025459. The reversal of 163025431 is 134520361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163025431 - 2⁵ = 163025399 is a prime.

It is a super-2 number, since 2×163025431² = 53154582305471522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163025396 and 163025405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163025231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81512715 + 81512716.

It is an arithmetic number, because the mean of its divisors is an integer number (81512716).

Almost surely, 2^163025431 is an apocalyptic number.

163025431 is a deficient number, since it is larger than the sum of its proper divisors (1).

163025431 is an equidigital number, since it uses as much as digits as its factorization.

163025431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 163025431 is about 12768.1412507851. The cubic root of 163025431 is about 546.2839642911.

Adding to 163025431 its reverse (134520361), we get a palindrome (297545792).

The spelling of 163025431 in words is "one hundred sixty-three million, twenty-five thousand, four hundred thirty-one".