103157081 has 2 divisors, whose sum is σ = 103157082. Its totient is φ = 103157080.

The previous prime is 103157077. The next prime is 103157083. The reversal of 103157081 is 180751301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93915481 + 9241600 = 9691^2 + 3040^2 .

It is a cyclic number.

It is not a de Polignac number, because 103157081 - 2² = 103157077 is a prime.

It is a super-2 number, since 2×103157081² = 21282766720881122, which contains 22 as substring.

Together with 103157083, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103157081.

It is not a weakly prime, because it can be changed into another prime (103157083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51578540 + 51578541.

It is an arithmetic number, because the mean of its divisors is an integer number (51578541).

Almost surely, 2^103157081 is an apocalyptic number.

It is an amenable number.

103157081 is a deficient number, since it is larger than the sum of its proper divisors (1).

103157081 is an equidigital number, since it uses as much as digits as its factorization.

103157081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 103157081 is about 10156.6274422172. The cubic root of 103157081 is about 468.9929865306.

The spelling of 103157081 in words is "one hundred three million, one hundred fifty-seven thousand, eighty-one".