431401000020 has 96 divisors (see below), whose sum is σ = 1225238047488. Its totient is φ = 113393175552.

The previous prime is 431401000013. The next prime is 431401000073. The reversal of 431401000020 is 20000104134.

It is a super-2 number, since 2×431401000020² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7139977 + ... + 7200143.

It is an arithmetic number, because the mean of its divisors is an integer number (12762896328).

Almost surely, 2^431401000020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431401000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (612619023744).

431401000020 is an abundant number, since it is smaller than the sum of its proper divisors (793837047468).

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

431401000020 is a wasteful number, since it uses less digits than its factorization.

431401000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61889 (or 61887 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 431401000020 its reverse (20000104134), we get a palindrome (451401104154).

The spelling of 431401000020 in words is "four hundred thirty-one billion, four hundred one million, twenty", and thus it is an aban number.