103140891 has 32 divisors (see below), whose sum is σ = 176046080. Its totient is φ = 58459968.

The previous prime is 103140883. The next prime is 103140931. The reversal of 103140891 is 198041301.

It is not a de Polignac number, because 103140891 - 2³ = 103140883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (103140811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21855 + ... + 26151.

It is an arithmetic number, because the mean of its divisors is an integer number (5501440).

Almost surely, 2^103140891 is an apocalyptic number.

103140891 is a deficient number, since it is larger than the sum of its proper divisors (72905189).

103140891 is a wasteful number, since it uses less digits than its factorization.

103140891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440 (or 4434 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 103140891 is about 10155.8303944089. The cubic root of 103140891 is about 468.9684498608.

The spelling of 103140891 in words is "one hundred three million, one hundred forty thousand, eight hundred ninety-one".