870214931 has 4 divisors (see below), whose sum is σ = 870738000. Its totient is φ = 869691864.

The previous prime is 870214879. The next prime is 870214937. The reversal of 870214931 is 139412078.

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

It is a cyclic number.

It is not a de Polignac number, because 870214931 - 2¹⁰ = 870213907 is a prime.

It is a super-2 number, since 2×870214931² = 1514548052270669522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 870214891 and 870214900.

It is not an unprimeable number, because it can be changed into a prime (870214937) 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, 259031 + ... + 262368.

It is an arithmetic number, because the mean of its divisors is an integer number (217684500).

Almost surely, 2^870214931 is an apocalyptic number.

870214931 is a deficient number, since it is larger than the sum of its proper divisors (523069).

870214931 is a wasteful number, since it uses less digits than its factorization.

870214931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523068.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 870214931 is about 29499.4056041812. The cubic root of 870214931 is about 954.7188781750.

The spelling of 870214931 in words is "eight hundred seventy million, two hundred fourteen thousand, nine hundred thirty-one".