403131243 has 8 divisors (see below), whose sum is σ = 552035728. Its totient is φ = 261490464.

The previous prime is 403131221. The next prime is 403131257. The reversal of 403131243 is 342131304.

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

It is not a de Polignac number, because 403131243 - 2¹⁰ = 403130219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403131283) 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, 1815796 + ... + 1816017.

It is an arithmetic number, because the mean of its divisors is an integer number (69004466).

Almost surely, 2^403131243 is an apocalyptic number.

403131243 is a deficient number, since it is larger than the sum of its proper divisors (148904485).

403131243 is a wasteful number, since it uses less digits than its factorization.

403131243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3631853.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 403131243 is about 20078.1284735406. The cubic root of 403131243 is about 738.7239043006.

Adding to 403131243 its reverse (342131304), we get a palindrome (745262547).

The spelling of 403131243 in words is "four hundred three million, one hundred thirty-one thousand, two hundred forty-three".