1231230259 has 16 divisors (see below), whose sum is σ = 1424394432. Its totient is φ = 1042449408.

The previous prime is 1231230211. The next prime is 1231230263. The reversal of 1231230259 is 9520321321.

It is not a de Polignac number, because 1231230259 - 2²⁵ = 1197675827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231230059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245097 + ... + 250069.

It is an arithmetic number, because the mean of its divisors is an integer number (89024652).

Almost surely, 2^1231230259 is an apocalyptic number.

1231230259 is a deficient number, since it is larger than the sum of its proper divisors (193164173).

1231230259 is a wasteful number, since it uses less digits than its factorization.

1231230259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5406.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1231230259 is about 35088.8908203152. The cubic root of 1231230259 is about 1071.7983729518.

The spelling of 1231230259 in words is "one billion, two hundred thirty-one million, two hundred thirty thousand, two hundred fifty-nine".