231212953 has 2 divisors, whose sum is σ = 231212954. Its totient is φ = 231212952.

The previous prime is 231212939. The next prime is 231212987. The reversal of 231212953 is 359212132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156425049 + 74787904 = 12507^2 + 8648^2 .

It is a cyclic number.

It is not a de Polignac number, because 231212953 - 2⁵ = 231212921 is a prime.

It is not a weakly prime, because it can be changed into another prime (231212153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115606476 + 115606477.

It is an arithmetic number, because the mean of its divisors is an integer number (115606477).

Almost surely, 2^231212953 is an apocalyptic number.

It is an amenable number.

231212953 is a deficient number, since it is larger than the sum of its proper divisors (1).

231212953 is an equidigital number, since it uses as much as digits as its factorization.

231212953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 231212953 is about 15205.6881790993. The cubic root of 231212953 is about 613.7677337346.

The spelling of 231212953 in words is "two hundred thirty-one million, two hundred twelve thousand, nine hundred fifty-three".