400260431 has 2 divisors, whose sum is σ = 400260432. Its totient is φ = 400260430.

The previous prime is 400260401. The next prime is 400260451. The reversal of 400260431 is 134062004.

It is a happy number.

It is an a-pointer prime, because the next prime (400260451) can be obtained adding 400260431 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400260431 - 2²² = 396066127 is a prime.

It is a super-2 number, since 2×400260431² = 320416825248611522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400260401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200130215 + 200130216.

It is an arithmetic number, because the mean of its divisors is an integer number (200130216).

Almost surely, 2^400260431 is an apocalyptic number.

400260431 is a deficient number, since it is larger than the sum of its proper divisors (1).

400260431 is an equidigital number, since it uses as much as digits as its factorization.

400260431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 400260431 is about 20006.5097155901. The cubic root of 400260431 is about 736.9661710381.

The spelling of 400260431 in words is "four hundred million, two hundred sixty thousand, four hundred thirty-one".