331433401 has 4 divisors (see below), whose sum is σ = 356928292. Its totient is φ = 305938512.

The previous prime is 331433353. The next prime is 331433423. The reversal of 331433401 is 104334133.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 218330176 + 113103225 = 14776^2 + 10635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331433401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331433491) 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, 12747426 + ... + 12747451.

It is an arithmetic number, because the mean of its divisors is an integer number (89232073).

Almost surely, 2^331433401 is an apocalyptic number.

It is an amenable number.

331433401 is a deficient number, since it is larger than the sum of its proper divisors (25494891).

331433401 is a wasteful number, since it uses less digits than its factorization.

331433401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25494890.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 331433401 is about 18205.3124389558. The cubic root of 331433401 is about 692.0414240352.

Adding to 331433401 its reverse (104334133), we get a palindrome (435767534).

The spelling of 331433401 in words is "three hundred thirty-one million, four hundred thirty-three thousand, four hundred one".