331542401 has 16 divisors (see below), whose sum is σ = 354430080. Its totient is φ = 309429120.

The previous prime is 331542391. The next prime is 331542403. The reversal of 331542401 is 104245133.

It is not a de Polignac number, because 331542401 - 2¹⁰ = 331541377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (331542403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256565 + ... + 257853.

It is an arithmetic number, because the mean of its divisors is an integer number (22151880).

Almost surely, 2^331542401 is an apocalyptic number.

It is an amenable number.

331542401 is a deficient number, since it is larger than the sum of its proper divisors (22887679).

331542401 is a wasteful number, since it uses less digits than its factorization.

331542401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 331542401 is about 18208.3058245406. The cubic root of 331542401 is about 692.1172806500.

Adding to 331542401 its reverse (104245133), we get a palindrome (435787534).

The spelling of 331542401 in words is "three hundred thirty-one million, five hundred forty-two thousand, four hundred one".