40434631 has 2 divisors, whose sum is σ = 40434632. Its totient is φ = 40434630.

The previous prime is 40434623. The next prime is 40434697. The reversal of 40434631 is 13643404.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40434631 - 2³ = 40434623 is a prime.

It is a super-2 number, since 2×40434631² = 3269918768212322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40434596 and 40434605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40434431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20217315 + 20217316.

It is an arithmetic number, because the mean of its divisors is an integer number (20217316).

Almost surely, 2^40434631 is an apocalyptic number.

40434631 is a deficient number, since it is larger than the sum of its proper divisors (1).

40434631 is an equidigital number, since it uses as much as digits as its factorization.

40434631 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 25.

The square root of 40434631 is about 6358.8230829297. The cubic root of 40434631 is about 343.2294107398.

The spelling of 40434631 in words is "forty million, four hundred thirty-four thousand, six hundred thirty-one".