63142531 has 2 divisors, whose sum is σ = 63142532. Its totient is φ = 63142530.

The previous prime is 63142523. The next prime is 63142561. The reversal of 63142531 is 13524136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63142531 - 2³ = 63142523 is a prime.

It is a super-2 number, since 2×63142531² = 7973958442171922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63142496 and 63142505.

It is not a weakly prime, because it can be changed into another prime (63142561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31571265 + 31571266.

It is an arithmetic number, because the mean of its divisors is an integer number (31571266).

Almost surely, 2^63142531 is an apocalyptic number.

63142531 is a deficient number, since it is larger than the sum of its proper divisors (1).

63142531 is an equidigital number, since it uses as much as digits as its factorization.

63142531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 63142531 is about 7946.2274696865. The cubic root of 63142531 is about 398.2055683250.

Adding to 63142531 its reverse (13524136), we get a palindrome (76666667).

The spelling of 63142531 in words is "sixty-three million, one hundred forty-two thousand, five hundred thirty-one".