3129493231 has 2 divisors, whose sum is σ = 3129493232. Its totient is φ = 3129493230.

The previous prime is 3129493207. The next prime is 3129493247. The reversal of 3129493231 is 1323949213.

It is a strong prime.

It is an emirp because it is prime and its reverse (1323949213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3129493231 - 2¹³ = 3129485039 is a prime.

It is a super-2 number, since 2×3129493231² = 19587455765749638722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3129493531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564746615 + 1564746616.

It is an arithmetic number, because the mean of its divisors is an integer number (1564746616).

Almost surely, 2^3129493231 is an apocalyptic number.

3129493231 is a deficient number, since it is larger than the sum of its proper divisors (1).

3129493231 is an equidigital number, since it uses as much as digits as its factorization.

3129493231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 37.

The square root of 3129493231 is about 55941.8736815277. The cubic root of 3129493231 is about 1462.7092421880.

The spelling of 3129493231 in words is "three billion, one hundred twenty-nine million, four hundred ninety-three thousand, two hundred thirty-one".