231896651 has 4 divisors (see below), whose sum is σ = 265024752. Its totient is φ = 198768552.

The previous prime is 231896629. The next prime is 231896659. The reversal of 231896651 is 156698132.

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 231896651 - 2¹⁴ = 231880267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231896599 and 231896608.

It is not an unprimeable number, because it can be changed into a prime (231896659) 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, 16564040 + ... + 16564053.

It is an arithmetic number, because the mean of its divisors is an integer number (66256188).

Almost surely, 2^231896651 is an apocalyptic number.

231896651 is a deficient number, since it is larger than the sum of its proper divisors (33128101).

231896651 is an equidigital number, since it uses as much as digits as its factorization.

231896651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33128100.

The product of its digits is 77760, while the sum is 41.

The square root of 231896651 is about 15228.1532366863. The cubic root of 231896651 is about 614.3721099556.

The spelling of 231896651 in words is "two hundred thirty-one million, eight hundred ninety-six thousand, six hundred fifty-one".