31422001140 has 240 divisors, whose sum is σ = 102127872000. Its totient is φ = 8078952960.

The previous prime is 31422001087. The next prime is 31422001183. The reversal of 31422001140 is 4110022413.

It is a super-2 number, since 2×31422001140² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 15717861 + ... + 15719859.

It is an arithmetic number, because the mean of its divisors is an integer number (425532800).

Almost surely, 2^31422001140 is an apocalyptic number.

31422001140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31422001140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51063936000).

31422001140 is an abundant number, since it is smaller than the sum of its proper divisors (70705870860).

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

31422001140 is a wasteful number, since it uses less digits than its factorization.

31422001140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364 (or 2353 counting only the distinct ones).

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

Adding to 31422001140 its reverse (4110022413), we get a palindrome (35532023553).

The spelling of 31422001140 in words is "thirty-one billion, four hundred twenty-two million, one thousand, one hundred forty".