231421703 has 2 divisors, whose sum is σ = 231421704. Its totient is φ = 231421702.

The previous prime is 231421681. The next prime is 231421721. The reversal of 231421703 is 307124132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231421703 - 2⁶ = 231421639 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231421763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115710851 + 115710852.

It is an arithmetic number, because the mean of its divisors is an integer number (115710852).

Almost surely, 2^231421703 is an apocalyptic number.

231421703 is a deficient number, since it is larger than the sum of its proper divisors (1).

231421703 is an equidigital number, since it uses as much as digits as its factorization.

231421703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 231421703 is about 15212.5508380416. The cubic root of 231421703 is about 613.9523910289.

Adding to 231421703 its reverse (307124132), we get a palindrome (538545835).

The spelling of 231421703 in words is "two hundred thirty-one million, four hundred twenty-one thousand, seven hundred three".