103231157 has 4 divisors (see below), whose sum is σ = 109303596. Its totient is φ = 97158720.

The previous prime is 103231151. The next prime is 103231181. The reversal of 103231157 is 751132301.

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 83923921 + 19307236 = 9161^2 + 4394^2 .

It is a cyclic number.

It is not a de Polignac number, because 103231157 - 2⁸ = 103230901 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 (103231151) 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, 3036194 + ... + 3036227.

It is an arithmetic number, because the mean of its divisors is an integer number (27325899).

Almost surely, 2^103231157 is an apocalyptic number.

103231157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

103231157 is a deficient number, since it is larger than the sum of its proper divisors (6072439).

103231157 is an equidigital number, since it uses as much as digits as its factorization.

103231157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6072438.

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

The square root of 103231157 is about 10160.2734707290. The cubic root of 103231157 is about 469.1052192916.

Adding to 103231157 its reverse (751132301), we get a palindrome (854363458).

The spelling of 103231157 in words is "one hundred three million, two hundred thirty-one thousand, one hundred fifty-seven".