321152123 has 4 divisors (see below), whose sum is σ = 321304128. Its totient is φ = 321000120.

The previous prime is 321152089. The next prime is 321152131. The reversal of 321152123 is 321251123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321251123 = 14779 ⋅21737.

It is a cyclic number.

It is not a de Polignac number, because 321152123 - 2²⁰ = 320103547 is a prime.

It is a super-2 number, since 2×321152123² = 206277372214814258, 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 = 321152095 and 321152104.

It is not an unprimeable number, because it can be changed into a prime (321152173) 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, 72788 + ... + 77073.

It is an arithmetic number, because the mean of its divisors is an integer number (80326032).

Almost surely, 2^321152123 is an apocalyptic number.

321152123 is a deficient number, since it is larger than the sum of its proper divisors (152005).

321152123 is a wasteful number, since it uses less digits than its factorization.

321152123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152004.

The product of its digits is 360, while the sum is 20.

The square root of 321152123 is about 17920.7177032618. The cubic root of 321152123 is about 684.8102715707.

The spelling of 321152123 in words is "three hundred twenty-one million, one hundred fifty-two thousand, one hundred twenty-three".