231121010003 has 32 divisors (see below), whose sum is σ = 255707891712. Its totient is φ = 207599212800.

The previous prime is 231121009991. The next prime is 231121010063. The reversal of 231121010003 is 300010121132.

It is a cyclic number.

It is not a de Polignac number, because 231121010003 - 2²⁰ = 231119961427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231121010003.

It is not an unprimeable number, because it can be changed into a prime (231121010063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29562551 + ... + 29570367.

It is an arithmetic number, because the mean of its divisors is an integer number (7990871616).

Almost surely, 2^231121010003 is an apocalyptic number.

231121010003 is a deficient number, since it is larger than the sum of its proper divisors (24586881709).

231121010003 is a wasteful number, since it uses less digits than its factorization.

231121010003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8315.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 231121010003 its reverse (300010121132), we get a palindrome (531131131135).

The spelling of 231121010003 in words is "two hundred thirty-one billion, one hundred twenty-one million, ten thousand, three".