103791257 has 4 divisors (see below), whose sum is σ = 103858896. Its totient is φ = 103723620.

The previous prime is 103791199. The next prime is 103791263. The reversal of 103791257 is 752197301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 752197301 = 7433 ⋅101197.

It is a cyclic number.

It is not a de Polignac number, because 103791257 - 2¹⁰ = 103790233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103791277) 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, 31463 + ... + 34604.

It is an arithmetic number, because the mean of its divisors is an integer number (25964724).

Almost surely, 2^103791257 is an apocalyptic number.

It is an amenable number.

103791257 is a deficient number, since it is larger than the sum of its proper divisors (67639).

103791257 is an equidigital number, since it uses as much as digits as its factorization.

103791257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67638.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 103791257 is about 10187.7994189128. The cubic root of 103791257 is about 469.9520956155.

The spelling of 103791257 in words is "one hundred three million, seven hundred ninety-one thousand, two hundred fifty-seven".