1231374943 has 8 divisors (see below), whose sum is σ = 1290433248. Its totient is φ = 1172776704.

The previous prime is 1231374919. The next prime is 1231374953. The reversal of 1231374943 is 3494731321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231374943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231374953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109530 + ... + 120247.

It is an arithmetic number, because the mean of its divisors is an integer number (161304156).

Almost surely, 2^1231374943 is an apocalyptic number.

1231374943 is a deficient number, since it is larger than the sum of its proper divisors (59058305).

1231374943 is a wasteful number, since it uses less digits than its factorization.

1231374943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230033.

The product of its digits is 54432, while the sum is 37.

The square root of 1231374943 is about 35090.9524379148. The cubic root of 1231374943 is about 1071.8403542684.

The spelling of 1231374943 in words is "one billion, two hundred thirty-one million, three hundred seventy-four thousand, nine hundred forty-three".