403140431 has 8 divisors (see below), whose sum is σ = 427880880. Its totient is φ = 378514048.

The previous prime is 403140377. The next prime is 403140433. The reversal of 403140431 is 134041304.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-403140431 is a prime.

It is a super-2 number, since 2×403140431² = 325044414213731522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403140433) 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, 21176 + ... + 35421.

It is an arithmetic number, because the mean of its divisors is an integer number (53485110).

Almost surely, 2^403140431 is an apocalyptic number.

403140431 is a deficient number, since it is larger than the sum of its proper divisors (24740449).

403140431 is a wasteful number, since it uses less digits than its factorization.

403140431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57033.

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

The square root of 403140431 is about 20078.3572784230. The cubic root of 403140431 is about 738.7295164876.

Adding to 403140431 its reverse (134041304), we get a palindrome (537181735).

The spelling of 403140431 in words is "four hundred three million, one hundred forty thousand, four hundred thirty-one".