321152141 has 4 divisors (see below), whose sum is σ = 321304284. Its totient is φ = 321000000.

The previous prime is 321152131. The next prime is 321152147. The reversal of 321152141 is 141251123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141251123 = 13 ⋅10865471.

It can be written as a sum of positive squares in 2 ways, for example, as 224700100 + 96452041 = 14990^2 + 9821^2 .

It is a cyclic number.

It is not a de Polignac number, because 321152141 - 2⁶ = 321152077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321152147) 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, 72860 + ... + 77141.

It is an arithmetic number, because the mean of its divisors is an integer number (80326071).

Almost surely, 2^321152141 is an apocalyptic number.

It is an amenable number.

321152141 is a deficient number, since it is larger than the sum of its proper divisors (152143).

321152141 is a wasteful number, since it uses less digits than its factorization.

321152141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152142.

The product of its digits is 240, while the sum is 20.

The square root of 321152141 is about 17920.7182054738. The cubic root of 321152141 is about 684.8102843648.

The spelling of 321152141 in words is "three hundred twenty-one million, one hundred fifty-two thousand, one hundred forty-one".