307971 has 12 divisors (see below), whose sum is σ = 468520. Its totient is φ = 194400.

The previous prime is 307969. The next prime is 308003. The reversal of 307971 is 179703.

It is not a de Polignac number, because 307971 - 2¹ = 307969 is a prime.

It is a super-2 number, since 2×307971² = 189692273682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (307171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 730 + ... + 1071.

2³⁰⁷⁹⁷¹ is an apocalyptic number.

307971 is a deficient number, since it is larger than the sum of its proper divisors (160549).

307971 is a wasteful number, since it uses less digits than its factorization.

307971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826 (or 1823 counting only the distinct ones).

The product of its (nonzero) digits is 1323, while the sum is 27.

The square root of 307971 is about 554.9513492190. The cubic root of 307971 is about 67.5310145540.

It can be divided in two parts, 30 and 7971, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 307971 in words is "three hundred seven thousand, nine hundred seventy-one".