103091831 has 2 divisors, whose sum is σ = 103091832. Its totient is φ = 103091830.

The previous prime is 103091827. The next prime is 103091851. The reversal of 103091831 is 138190301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103091831 - 2² = 103091827 is a prime.

It is a super-2 number, since 2×103091831² = 21255851237865122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103091831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103091801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51545915 + 51545916.

It is an arithmetic number, because the mean of its divisors is an integer number (51545916).

Almost surely, 2^103091831 is an apocalyptic number.

103091831 is a deficient number, since it is larger than the sum of its proper divisors (1).

103091831 is an equidigital number, since it uses as much as digits as its factorization.

103091831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 103091831 is about 10153.4147457887. The cubic root of 103091831 is about 468.8940815515.

The spelling of 103091831 in words is "one hundred three million, ninety-one thousand, eight hundred thirty-one".