970999531 has 2 divisors, whose sum is σ = 970999532. Its totient is φ = 970999530.

The previous prime is 970999529. The next prime is 970999543. The reversal of 970999531 is 135999079.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 970999531 - 2¹ = 970999529 is a prime.

It is a super-2 number, since 2×970999531² = 1885680178404439922, which contains 22 as substring.

Together with 970999529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (970999501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485499765 + 485499766.

It is an arithmetic number, because the mean of its divisors is an integer number (485499766).

Almost surely, 2^970999531 is an apocalyptic number.

970999531 is a deficient number, since it is larger than the sum of its proper divisors (1).

970999531 is an equidigital number, since it uses as much as digits as its factorization.

970999531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 688905, while the sum is 52.

The square root of 970999531 is about 31160.8653763017. The cubic root of 970999531 is about 990.2381942248.

The spelling of 970999531 in words is "nine hundred seventy million, nine hundred ninety-nine thousand, five hundred thirty-one".