231403053 has 8 divisors (see below), whose sum is σ = 352614208. Its totient is φ = 132230304.

The previous prime is 231403037. The next prime is 231403063. The reversal of 231403053 is 350304132.

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

It is not a de Polignac number, because 231403053 - 2⁴ = 231403037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 11019193 = 231403053 / (2 + 3 + 1 + 4 + 0 + 3 + 0 + 5 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231403013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5509576 + ... + 5509617.

It is an arithmetic number, because the mean of its divisors is an integer number (44076776).

Almost surely, 2^231403053 is an apocalyptic number.

It is an amenable number.

231403053 is a deficient number, since it is larger than the sum of its proper divisors (121211155).

231403053 is a wasteful number, since it uses less digits than its factorization.

231403053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11019203.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 231403053 is about 15211.9378449953. The cubic root of 231403053 is about 613.9358980213.

Adding to 231403053 its reverse (350304132), we get a palindrome (581707185).

The spelling of 231403053 in words is "two hundred thirty-one million, four hundred three thousand, fifty-three".