152402231 has 4 divisors (see below), whose sum is σ = 157318464. Its totient is φ = 147486000.

The previous prime is 152402227. The next prime is 152402273. The reversal of 152402231 is 132204251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132204251 = 823 ⋅160637.

It is a cyclic number.

It is not a de Polignac number, because 152402231 - 2² = 152402227 is a prime.

It is a super-2 number, since 2×152402231² = 46452880027554722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152401231) 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, 2458070 + ... + 2458131.

It is an arithmetic number, because the mean of its divisors is an integer number (39329616).

Almost surely, 2^152402231 is an apocalyptic number.

152402231 is a deficient number, since it is larger than the sum of its proper divisors (4916233).

152402231 is an equidigital number, since it uses as much as digits as its factorization.

152402231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916232.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 152402231 is about 12345.1298494589. The cubic root of 152402231 is about 534.1506668051.

Adding to 152402231 its reverse (132204251), we get a palindrome (284606482).

It can be divided in two parts, 15240 and 2231, that added together give a palindrome (17471).

The spelling of 152402231 in words is "one hundred fifty-two million, four hundred two thousand, two hundred thirty-one".