103123157 has 4 divisors (see below), whose sum is σ = 103188396. Its totient is φ = 103057920.

The previous prime is 103123147. The next prime is 103123183. The reversal of 103123157 is 751321301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69122596 + 34000561 = 8314^2 + 5831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103123157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103123147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30188 + ... + 33429.

It is an arithmetic number, because the mean of its divisors is an integer number (25797099).

Almost surely, 2^103123157 is an apocalyptic number.

It is an amenable number.

103123157 is a deficient number, since it is larger than the sum of its proper divisors (65239).

103123157 is an equidigital number, since it uses as much as digits as its factorization.

103123157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65238.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 103123157 is about 10154.9572623424. The cubic root of 103123157 is about 468.9415702430.

Adding to 103123157 its reverse (751321301), we get a palindrome (854444458).

The spelling of 103123157 in words is "one hundred three million, one hundred twenty-three thousand, one hundred fifty-seven".