403020131220 has 144 divisors (see below), whose sum is σ = 1408138088448. Its totient is φ = 91393505280.

The previous prime is 403020131219. The next prime is 403020131249. The reversal of 403020131220 is 22131020304.

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 = 403020131193 and 403020131202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1099261 + ... + 1419300.

Almost surely, 2^403020131220 is an apocalyptic number.

It is an amenable number.

403020131220 is an abundant number, since it is smaller than the sum of its proper divisors (1005117957228).

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

403020131220 is a wasteful number, since it uses less digits than its factorization.

403020131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518710 (or 2518705 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 403020131220 its reverse (22131020304), we get a palindrome (425151151524).

The spelling of 403020131220 in words is "four hundred three billion, twenty million, one hundred thirty-one thousand, two hundred twenty".