971318540 has 12 divisors (see below), whose sum is σ = 2039768976. Its totient is φ = 388527408.

The previous prime is 971318533. The next prime is 971318549. The reversal of 971318540 is 45813179.

It is a super-2 number, since 2×971318540² = 1886919412295463200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 971318494 and 971318503.

It is not an unprimeable number, because it can be changed into a prime (971318549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24282944 + ... + 24282983.

It is an arithmetic number, because the mean of its divisors is an integer number (169980748).

Almost surely, 2^971318540 is an apocalyptic number.

It is an amenable number.

971318540 is an abundant number, since it is smaller than the sum of its proper divisors (1068450436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

971318540 is a wasteful number, since it uses less digits than its factorization.

971318540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48565936 (or 48565934 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 971318540 is about 31165.9837001818. The cubic root of 971318540 is about 990.3466255535.

The spelling of 971318540 in words is "nine hundred seventy-one million, three hundred eighteen thousand, five hundred forty".