40231319 has 2 divisors, whose sum is σ = 40231320. Its totient is φ = 40231318.

The previous prime is 40231313. The next prime is 40231339. The reversal of 40231319 is 91313204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40231319 - 2²⁴ = 23454103 is a prime.

It is a super-2 number, since 2×40231319² = 3237118056959522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40231294 and 40231303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40231313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20115659 + 20115660.

It is an arithmetic number, because the mean of its divisors is an integer number (20115660).

Almost surely, 2^40231319 is an apocalyptic number.

40231319 is a deficient number, since it is larger than the sum of its proper divisors (1).

40231319 is an equidigital number, since it uses as much as digits as its factorization.

40231319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 40231319 is about 6342.8163303063. The cubic root of 40231319 is about 342.6531724706.

The spelling of 40231319 in words is "forty million, two hundred thirty-one thousand, three hundred nineteen".