231401449 has 2 divisors, whose sum is σ = 231401450. Its totient is φ = 231401448.

The previous prime is 231401431. The next prime is 231401497. The reversal of 231401449 is 944104132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203575824 + 27825625 = 14268^2 + 5275^2 .

It is a cyclic number.

It is not a de Polignac number, because 231401449 - 2⁹ = 231400937 is a prime.

It is equal to p_12715507 and since 231401449 and 12715507 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (231401249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115700724 + 115700725.

It is an arithmetic number, because the mean of its divisors is an integer number (115700725).

Almost surely, 2^231401449 is an apocalyptic number.

It is an amenable number.

231401449 is a deficient number, since it is larger than the sum of its proper divisors (1).

231401449 is an equidigital number, since it uses as much as digits as its factorization.

231401449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 231401449 is about 15211.8851231529. The cubic root of 231401449 is about 613.9344794929.

The spelling of 231401449 in words is "two hundred thirty-one million, four hundred one thousand, four hundred forty-nine".