40626431 has 2 divisors, whose sum is σ = 40626432. Its totient is φ = 40626430.

The previous prime is 40626373. The next prime is 40626433. The reversal of 40626431 is 13462604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40626431 - 2¹⁴ = 40610047 is a prime.

It is a super-2 number, since 2×40626431² = 3301013791595522, which contains 22 as substring.

Together with 40626433, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 40626431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40626433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20313215 + 20313216.

It is an arithmetic number, because the mean of its divisors is an integer number (20313216).

Almost surely, 2^40626431 is an apocalyptic number.

40626431 is a deficient number, since it is larger than the sum of its proper divisors (1).

40626431 is an equidigital number, since it uses as much as digits as its factorization.

40626431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 40626431 is about 6373.8866478782. The cubic root of 40626431 is about 343.7712530771.

The spelling of 40626431 in words is "forty million, six hundred twenty-six thousand, four hundred thirty-one".