40103431 has 2 divisors, whose sum is σ = 40103432. Its totient is φ = 40103430.

The previous prime is 40103419. The next prime is 40103447. The reversal of 40103431 is 13430104.

It is an a-pointer prime, because the next prime (40103447) can be obtained adding 40103431 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40103431 - 2¹⁹ = 39579143 is a prime.

It is a super-2 number, since 2×40103431² = 3216570355943522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40103411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20051715 + 20051716.

It is an arithmetic number, because the mean of its divisors is an integer number (20051716).

Almost surely, 2^40103431 is an apocalyptic number.

40103431 is a deficient number, since it is larger than the sum of its proper divisors (1).

40103431 is an equidigital number, since it uses as much as digits as its factorization.

40103431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 40103431 is about 6332.7269797458. The cubic root of 40103431 is about 342.2897098300.

Adding to 40103431 its reverse (13430104), we get a palindrome (53533535).

The spelling of 40103431 in words is "forty million, one hundred three thousand, four hundred thirty-one".