31401302221100 has 144 divisors (see below), whose sum is σ = 81977464773120. Its totient is φ = 10199080396800.

The previous prime is 31401302221057. The next prime is 31401302221123. The reversal of 31401302221100 is 112220310413.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 473327132 + ... + 473393468.

Almost surely, 2^{31401302221100} is an apocalyptic number.

It is an amenable number.

31401302221100 is an abundant number, since it is smaller than the sum of its proper divisors (50576162552020).

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

31401302221100 is a wasteful number, since it uses less digits than its factorization.

31401302221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101968 (or 101961 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31401302221100 its reverse (112220310413), we get a palindrome (31513522531513).

The spelling of 31401302221100 in words is "thirty-one trillion, four hundred one billion, three hundred two million, two hundred twenty-one thousand, one hundred".