1232381537 has 4 divisors (see below), whose sum is σ = 1232451840. Its totient is φ = 1232311236.

The previous prime is 1232381531. The next prime is 1232381539. The reversal of 1232381537 is 7351832321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1232381537 - 2²⁰ = 1231332961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232381497 and 1232381506.

It is not an unprimeable number, because it can be changed into a prime (1232381531) 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, 14888 + ... + 51830.

It is an arithmetic number, because the mean of its divisors is an integer number (308112960).

Almost surely, 2^1232381537 is an apocalyptic number.

It is an amenable number.

1232381537 is a deficient number, since it is larger than the sum of its proper divisors (70303).

1232381537 is an equidigital number, since it uses as much as digits as its factorization.

1232381537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70302.

The product of its digits is 30240, while the sum is 35.

The square root of 1232381537 is about 35105.2921508994. The cubic root of 1232381537 is about 1072.1323352562.

The spelling of 1232381537 in words is "one billion, two hundred thirty-two million, three hundred eighty-one thousand, five hundred thirty-seven".