431140402 has 32 divisors (see below), whose sum is σ = 807865344. Its totient is φ = 167648400.

The previous prime is 431140279. The next prime is 431140421. The reversal of 431140402 is 204041134.

It is a self number, because there is not a number n which added to its sum of digits gives 431140402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85483 + ... + 90385.

It is an arithmetic number, because the mean of its divisors is an integer number (25245792).

Almost surely, 2^431140402 is an apocalyptic number.

431140402 is a deficient number, since it is larger than the sum of its proper divisors (376724942).

431140402 is a wasteful number, since it uses less digits than its factorization.

431140402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5494.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 431140402 is about 20763.9206798716. The cubic root of 431140402 is about 755.4508962572.

Adding to 431140402 its reverse (204041134), we get a palindrome (635181536).

The spelling of 431140402 in words is "four hundred thirty-one million, one hundred forty thousand, four hundred two".