1232156867 has 4 divisors (see below), whose sum is σ = 1250547336. Its totient is φ = 1213766400.

The previous prime is 1232156839. The next prime is 1232156911. The reversal of 1232156867 is 7686512321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1232156867 - 2¹⁶ = 1232091331 is a prime.

It is a super-3 number, since 3×1232156867³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232156837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9195134 + ... + 9195267.

It is an arithmetic number, because the mean of its divisors is an integer number (312636834).

Almost surely, 2^1232156867 is an apocalyptic number.

1232156867 is a deficient number, since it is larger than the sum of its proper divisors (18390469).

1232156867 is an equidigital number, since it uses as much as digits as its factorization.

1232156867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18390468.

The product of its digits is 120960, while the sum is 41.

The square root of 1232156867 is about 35102.0920601607. The cubic root of 1232156867 is about 1072.0671794031.

The spelling of 1232156867 in words is "one billion, two hundred thirty-two million, one hundred fifty-six thousand, eight hundred sixty-seven".