231022733 has 2 divisors, whose sum is σ = 231022734. Its totient is φ = 231022732.

The previous prime is 231022681. The next prime is 231022739. The reversal of 231022733 is 337220132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134629609 + 96393124 = 11603^2 + 9818^2 .

It is a cyclic number.

It is not a de Polignac number, because 231022733 - 2²² = 226828429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231022699 and 231022708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231022739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115511366 + 115511367.

It is an arithmetic number, because the mean of its divisors is an integer number (115511367).

Almost surely, 2^231022733 is an apocalyptic number.

It is an amenable number.

231022733 is a deficient number, since it is larger than the sum of its proper divisors (1).

231022733 is an equidigital number, since it uses as much as digits as its factorization.

231022733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 231022733 is about 15199.4319959662. The cubic root of 231022733 is about 613.5993710072.

Adding to 231022733 its reverse (337220132), we get a palindrome (568242865).

The spelling of 231022733 in words is "two hundred thirty-one million, twenty-two thousand, seven hundred thirty-three".