1232131357 has 2 divisors, whose sum is σ = 1232131358. Its totient is φ = 1232131356.

The previous prime is 1232131319. The next prime is 1232131379. The reversal of 1232131357 is 7531312321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1051121241 + 181010116 = 32421^2 + 13454^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232131357 - 2¹⁵ = 1232098589 is a prime.

It is a super-2 number, since 2×1232131357² = 3036295361805322898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1232131387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616065678 + 616065679.

It is an arithmetic number, because the mean of its divisors is an integer number (616065679).

Almost surely, 2^1232131357 is an apocalyptic number.

It is an amenable number.

1232131357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232131357 is an equidigital number, since it uses as much as digits as its factorization.

1232131357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 28.

The square root of 1232131357 is about 35101.7286896244. The cubic root of 1232131357 is about 1072.0597808261.

Adding to 1232131357 its reverse (7531312321), we get a palindrome (8763443678).

The spelling of 1232131357 in words is "one billion, two hundred thirty-two million, one hundred thirty-one thousand, three hundred fifty-seven".