1185267231 has 6 divisors (see below), whose sum is σ = 1712052680. Its totient is φ = 790178148.

The previous prime is 1185267227. The next prime is 1185267241. The reversal of 1185267231 is 1327625811.

It is not a de Polignac number, because 1185267231 - 2² = 1185267227 is a prime.

It is a super-2 number, since 2×1185267231² = 2809716817764814722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1185267221) 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, 65848171 + ... + 65848188.

Almost surely, 2^1185267231 is an apocalyptic number.

1185267231 is a deficient number, since it is larger than the sum of its proper divisors (526785449).

1185267231 is a wasteful number, since it uses less digits than its factorization.

1185267231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131696365 (or 131696362 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 1185267231 is about 34427.7102201119. The cubic root of 1185267231 is about 1058.2917873427.

The spelling of 1185267231 in words is "one billion, one hundred eighty-five million, two hundred sixty-seven thousand, two hundred thirty-one".