331020126 has 24 divisors (see below), whose sum is σ = 717922920. Its totient is φ = 110230416.

The previous prime is 331020119. The next prime is 331020161. The reversal of 331020126 is 621020133.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 331020099 and 331020108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10641 + ... + 27843.

It is an arithmetic number, because the mean of its divisors is an integer number (29913455).

Almost surely, 2^331020126 is an apocalyptic number.

331020126 is an abundant number, since it is smaller than the sum of its proper divisors (386902794).

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

331020126 is a wasteful number, since it uses less digits than its factorization.

331020126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18280 (or 18277 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 331020126 is about 18193.9585027558. The cubic root of 331020126 is about 691.7536614695.

Adding to 331020126 its reverse (621020133), we get a palindrome (952040259).

It can be divided in two parts, 3310 and 20126, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 331020126 in words is "three hundred thirty-one million, twenty thousand, one hundred twenty-six".