15131983 has 2 divisors, whose sum is σ = 15131984. Its totient is φ = 15131982.

The previous prime is 15131981. The next prime is 15132031. The reversal of 15131983 is 38913151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15131983 - 2¹ = 15131981 is a prime.

Together with 15131981, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15131981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7565991 + 7565992.

It is an arithmetic number, because the mean of its divisors is an integer number (7565992).

Almost surely, 2^15131983 is an apocalyptic number.

15131983 is a deficient number, since it is larger than the sum of its proper divisors (1).

15131983 is an equidigital number, since it uses as much as digits as its factorization.

15131983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 31.

The square root of 15131983 is about 3889.9849614105. The cubic root of 15131983 is about 247.3424252915.

The spelling of 15131983 in words is "fifteen million, one hundred thirty-one thousand, nine hundred eighty-three".