1173389231 has 6 divisors (see below), whose sum is σ = 1364963040. Its totient is φ = 1005762156.

The previous prime is 1173389221. The next prime is 1173389233. The reversal of 1173389231 is 1329833711.

It is not a de Polignac number, because 1173389231 - 2⁶ = 1173389167 is a prime.

It is a super-2 number, since 2×1173389231² = 2753684574853542722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1173389233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11973311 + ... + 11973408.

It is an arithmetic number, because the mean of its divisors is an integer number (227493840).

Almost surely, 2^1173389231 is an apocalyptic number.

1173389231 is a deficient number, since it is larger than the sum of its proper divisors (191573809).

1173389231 is an equidigital number, since it uses as much as digits as its factorization.

1173389231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23946733 (or 23946726 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 1173389231 is about 34254.7694635360. The cubic root of 1173389231 is about 1054.7447346298.

The spelling of 1173389231 in words is "one billion, one hundred seventy-three million, three hundred eighty-nine thousand, two hundred thirty-one".