31441132140 has 48 divisors (see below), whose sum is σ = 96038369280. Its totient is φ = 7622092480.

The previous prime is 31441132123. The next prime is 31441132141. The reversal of 31441132140 is 4123114413.

It is a self number, because there is not a number n which added to its sum of digits gives 31441132140.

It is not an unprimeable number, because it can be changed into a prime (31441132141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23818380 + ... + 23819699.

It is an arithmetic number, because the mean of its divisors is an integer number (2000799360).

Almost surely, 2^31441132140 is an apocalyptic number.

31441132140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31441132140 is an abundant number, since it is smaller than the sum of its proper divisors (64597237140).

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

31441132140 is a wasteful number, since it uses less digits than its factorization.

31441132140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47638102 (or 47638100 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 31441132140 its reverse (4123114413), we get a palindrome (35564246553).

The spelling of 31441132140 in words is "thirty-one billion, four hundred forty-one million, one hundred thirty-two thousand, one hundred forty".