63749131 has 2 divisors, whose sum is σ = 63749132. Its totient is φ = 63749130.

The previous prime is 63749111. The next prime is 63749141. The reversal of 63749131 is 13194736.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63749131 - 2¹⁵ = 63716363 is a prime.

It is a super-2 number, since 2×63749131² = 8127903406510322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63749111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31874565 + 31874566.

It is an arithmetic number, because the mean of its divisors is an integer number (31874566).

Almost surely, 2^63749131 is an apocalyptic number.

63749131 is a deficient number, since it is larger than the sum of its proper divisors (1).

63749131 is an equidigital number, since it uses as much as digits as its factorization.

63749131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 34.

The square root of 63749131 is about 7984.3052922593. The cubic root of 63749131 is about 399.4766718678.

The spelling of 63749131 in words is "sixty-three million, seven hundred forty-nine thousand, one hundred thirty-one".