152231331 has 8 divisors (see below), whose sum is σ = 231971584. Its totient is φ = 86989320.

The previous prime is 152231323. The next prime is 152231333. The reversal of 152231331 is 133132251.

152231331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 152231331 - 2³ = 152231323 is a prime.

It is a super-2 number, since 2×152231331² = 46348756276063122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 7249111 = 152231331 / (1 + 5 + 2 + 2 + 3 + 1 + 3 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 152231298 and 152231307.

It is not an unprimeable number, because it can be changed into a prime (152231333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3624535 + ... + 3624576.

It is an arithmetic number, because the mean of its divisors is an integer number (28996448).

Almost surely, 2^152231331 is an apocalyptic number.

152231331 is a deficient number, since it is larger than the sum of its proper divisors (79740253).

152231331 is an equidigital number, since it uses as much as digits as its factorization.

152231331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7249121.

The product of its digits is 540, while the sum is 21.

The square root of 152231331 is about 12338.2061500041. The cubic root of 152231331 is about 533.9509311195.

Adding to 152231331 its reverse (133132251), we get a palindrome (285363582).

The spelling of 152231331 in words is "one hundred fifty-two million, two hundred thirty-one thousand, three hundred thirty-one".