402101431020 has 36 divisors (see below), whose sum is σ = 1219707674640. Its totient is φ = 107227048224.

The previous prime is 402101431007. The next prime is 402101431031. The reversal of 402101431020 is 20134101204.

402101431020 is a `hidden beast` number, since 4 + 0 + 210 + 1 + 431 + 0 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 402101430984 and 402101431002.

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, 1116948240 + ... + 1116948599.

It is an arithmetic number, because the mean of its divisors is an integer number (33880768740).

Almost surely, 2^402101431020 is an apocalyptic number.

It is an amenable number.

402101431020 is an abundant number, since it is smaller than the sum of its proper divisors (817606243620).

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

402101431020 is a wasteful number, since it uses less digits than its factorization.

402101431020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233896854 (or 2233896849 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 402101431020 its reverse (20134101204), we get a palindrome (422235532224).

The spelling of 402101431020 in words is "four hundred two billion, one hundred one million, four hundred thirty-one thousand, twenty".