401003312321020 has 24 divisors (see below), whose sum is σ = 886428374605200. Its totient is φ = 151959149932032.

The previous prime is 401003312321009. The next prime is 401003312321033. The reversal of 401003312321020 is 20123213300104.

It is a junction number, because it is equal to n+sod(n) for n = 401003312320982 and 401003312321000.

It is a congruent number.

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, 527635936885 + ... + 527635937644.

It is an arithmetic number, because the mean of its divisors is an integer number (36934515608550).

Almost surely, 2^{401003312321020} is an apocalyptic number.

It is an amenable number.

401003312321020 is an abundant number, since it is smaller than the sum of its proper divisors (485425062284180).

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

401003312321020 is a wasteful number, since it uses less digits than its factorization.

401003312321020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055271874557 (or 1055271874555 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 401003312321020 its reverse (20123213300104), we get a palindrome (421126525621124).

The spelling of 401003312321020 in words is "four hundred one trillion, three billion, three hundred twelve million, three hundred twenty-one thousand, twenty".