231948643 has 2 divisors, whose sum is σ = 231948644. Its totient is φ = 231948642.

The previous prime is 231948611. The next prime is 231948653. The reversal of 231948643 is 346849132.

It is a happy number.

231948643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231948643 - 2⁵ = 231948611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231948596 and 231948605.

It is not a weakly prime, because it can be changed into another prime (231948653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115974321 + 115974322.

It is an arithmetic number, because the mean of its divisors is an integer number (115974322).

Almost surely, 2^231948643 is an apocalyptic number.

231948643 is a deficient number, since it is larger than the sum of its proper divisors (1).

231948643 is an equidigital number, since it uses as much as digits as its factorization.

231948643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 40.

The square root of 231948643 is about 15229.8602423003. The cubic root of 231948643 is about 614.4180212810.

It can be divided in two parts, 2319486 and 43, that added together give a square (2319529 = 1523²).

The spelling of 231948643 in words is "two hundred thirty-one million, nine hundred forty-eight thousand, six hundred forty-three".