235157081 has 2 divisors, whose sum is σ = 235157082. Its totient is φ = 235157080.

The previous prime is 235157077. The next prime is 235157147. The reversal of 235157081 is 180751532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229825600 + 5331481 = 15160^2 + 2309^2 .

It is a cyclic number.

It is not a de Polignac number, because 235157081 - 2² = 235157077 is a prime.

It is a super-2 number, since 2×235157081² = 110597705488881122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (235157071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117578540 + 117578541.

It is an arithmetic number, because the mean of its divisors is an integer number (117578541).

Almost surely, 2^235157081 is an apocalyptic number.

It is an amenable number.

235157081 is a deficient number, since it is larger than the sum of its proper divisors (1).

235157081 is an equidigital number, since it uses as much as digits as its factorization.

235157081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 235157081 is about 15334.8322781829. The cubic root of 235157081 is about 617.2380447898.

The spelling of 235157081 in words is "two hundred thirty-five million, one hundred fifty-seven thousand, eighty-one".