231382373 has 2 divisors, whose sum is σ = 231382374. Its totient is φ = 231382372.

The previous prime is 231382309. The next prime is 231382391. The reversal of 231382373 is 373283132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230493124 + 889249 = 15182^2 + 943^2 .

It is a cyclic number.

It is not a de Polignac number, because 231382373 - 2⁶ = 231382309 is a prime.

It is a super-2 number, since 2×231382373² = 107075605070222258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231382973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115691186 + 115691187.

It is an arithmetic number, because the mean of its divisors is an integer number (115691187).

Almost surely, 2^231382373 is an apocalyptic number.

It is an amenable number.

231382373 is a deficient number, since it is larger than the sum of its proper divisors (1).

231382373 is an equidigital number, since it uses as much as digits as its factorization.

231382373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 32.

The square root of 231382373 is about 15211.2581004991. The cubic root of 231382373 is about 613.9176087602.

The spelling of 231382373 in words is "two hundred thirty-one million, three hundred eighty-two thousand, three hundred seventy-three".