331245542 has 4 divisors (see below), whose sum is σ = 496868316. Its totient is φ = 165622770.

The previous prime is 331245539. The next prime is 331245547. The reversal of 331245542 is 245542133.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245542133 = 907 ⋅270719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331245547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82811384 + ... + 82811387.

It is an arithmetic number, because the mean of its divisors is an integer number (124217079).

Almost surely, 2^331245542 is an apocalyptic number.

331245542 is a deficient number, since it is larger than the sum of its proper divisors (165622774).

331245542 is a wasteful number, since it uses less digits than its factorization.

331245542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165622773.

The product of its digits is 14400, while the sum is 29.

The square root of 331245542 is about 18200.1522521104. The cubic root of 331245542 is about 691.9106478571.

Adding to 331245542 its reverse (245542133), we get a palindrome (576787675).

The spelling of 331245542 in words is "three hundred thirty-one million, two hundred forty-five thousand, five hundred forty-two".