968978531 has 2 divisors, whose sum is σ = 968978532. Its totient is φ = 968978530.

The previous prime is 968978467. The next prime is 968978539. The reversal of 968978531 is 135879869.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 968978531 - 2⁶ = 968978467 is a prime.

It is a super-2 number, since 2×968978531² = 1877838787077835922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (968978539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484489265 + 484489266.

It is an arithmetic number, because the mean of its divisors is an integer number (484489266).

Almost surely, 2^968978531 is an apocalyptic number.

968978531 is a deficient number, since it is larger than the sum of its proper divisors (1).

968978531 is an equidigital number, since it uses as much as digits as its factorization.

968978531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 56.

The square root of 968978531 is about 31128.4199888141. The cubic root of 968978531 is about 989.5507028340.

The spelling of 968978531 in words is "nine hundred sixty-eight million, nine hundred seventy-eight thousand, five hundred thirty-one".