40103131 has 4 divisors (see below), whose sum is σ = 40148064. Its totient is φ = 40058200.

The previous prime is 40103113. The next prime is 40103179. The reversal of 40103131 is 13130104.

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

It is a cyclic number.

It is not a de Polignac number, because 40103131 - 2⁹ = 40102619 is a prime.

It is a super-2 number, since 2×40103131² = 3216522232006322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40103111) 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, 21100 + ... + 22921.

It is an arithmetic number, because the mean of its divisors is an integer number (10037016).

Almost surely, 2^40103131 is an apocalyptic number.

40103131 is a deficient number, since it is larger than the sum of its proper divisors (44933).

40103131 is an equidigital number, since it uses as much as digits as its factorization.

40103131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44932.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 40103131 is about 6332.7032932232. The cubic root of 40103131 is about 342.2888563106.

Adding to 40103131 its reverse (13130104), we get a palindrome (53233235).

The spelling of 40103131 in words is "forty million, one hundred three thousand, one hundred thirty-one".