971512023 has 4 divisors (see below), whose sum is σ = 1295349368. Its totient is φ = 647674680.

The previous prime is 971511991. The next prime is 971512033. The reversal of 971512023 is 320215179.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 971512023 - 2⁵ = 971511991 is a prime.

It is a super-2 number, since 2×971512023² = 1887671221667105058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971512033) 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, 161918668 + ... + 161918673.

It is an arithmetic number, because the mean of its divisors is an integer number (323837342).

Almost surely, 2^971512023 is an apocalyptic number.

971512023 is a deficient number, since it is larger than the sum of its proper divisors (323837345).

971512023 is a wasteful number, since it uses less digits than its factorization.

971512023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323837344.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 971512023 is about 31169.0876189856. The cubic root of 971512023 is about 990.4123789621.

The spelling of 971512023 in words is "nine hundred seventy-one million, five hundred twelve thousand, twenty-three".