232137891 has 24 divisors (see below), whose sum is σ = 340470000. Its totient is φ = 152395776.

The previous prime is 232137881. The next prime is 232137901. The reversal of 232137891 is 198731232.

232137891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (232137881) and next prime (232137901).

It is not a de Polignac number, because 232137891 - 2¹³ = 232129699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (232137811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 185235 + ... + 186483.

It is an arithmetic number, because the mean of its divisors is an integer number (14186250).

Almost surely, 2^232137891 is an apocalyptic number.

232137891 is a deficient number, since it is larger than the sum of its proper divisors (108332109).

232137891 is a wasteful number, since it uses less digits than its factorization.

232137891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555 (or 1552 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 232137891 is about 15236.0720331718. The cubic root of 232137891 is about 614.5850780495.

The spelling of 232137891 in words is "two hundred thirty-two million, one hundred thirty-seven thousand, eight hundred ninety-one".