331434020 has 24 divisors (see below), whose sum is σ = 718464768. Its totient is φ = 128296800.

The previous prime is 331434017. The next prime is 331434031. The reversal of 331434020 is 20434133.

It is a super-2 number, since 2×331434020² = 219697019226720800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 331433983 and 331434001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266666 + ... + 267905.

It is an arithmetic number, because the mean of its divisors is an integer number (29936032).

Almost surely, 2^331434020 is an apocalyptic number.

It is an amenable number.

331434020 is an abundant number, since it is smaller than the sum of its proper divisors (387030748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331434020 is a wasteful number, since it uses less digits than its factorization.

331434020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534611 (or 534609 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 331434020 is about 18205.3294394801. The cubic root of 331434020 is about 692.0418548642.

Adding to 331434020 its reverse (20434133), we get a palindrome (351868153).

The spelling of 331434020 in words is "three hundred thirty-one million, four hundred thirty-four thousand, twenty".