40402430431 has 8 divisors (see below), whose sum is σ = 44113290624. Its totient is φ = 36697888920.

The previous prime is 40402430377. The next prime is 40402430447. The reversal of 40402430431 is 13403420404.

40402430431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40402430431 - 2¹³ = 40402422239 is a prime.

It is a super-2 number, since 2×40402430431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40402430396 and 40402430405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40402430491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1566291 + ... + 1591876.

It is an arithmetic number, because the mean of its divisors is an integer number (5514161328).

Almost surely, 2^40402430431 is an apocalyptic number.

40402430431 is a deficient number, since it is larger than the sum of its proper divisors (3710860193).

40402430431 is a wasteful number, since it uses less digits than its factorization.

40402430431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159341.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 40402430431 its reverse (13403420404), we get a palindrome (53805850835).

The spelling of 40402430431 in words is "forty billion, four hundred two million, four hundred thirty thousand, four hundred thirty-one".