31440201142 has 32 divisors (see below), whose sum is σ = 56483899200. Its totient is φ = 13110189120.

The previous prime is 31440201061. The next prime is 31440201161. The reversal of 31440201142 is 24110204413.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 593959 + ... + 644722.

It is an arithmetic number, because the mean of its divisors is an integer number (1765121850).

Almost surely, 2^31440201142 is an apocalyptic number.

31440201142 is a deficient number, since it is larger than the sum of its proper divisors (25043698058).

31440201142 is a wasteful number, since it uses less digits than its factorization.

31440201142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238741 (or 1238727 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 31440201142 its reverse (24110204413), we get a palindrome (55550405555).

The spelling of 31440201142 in words is "thirty-one billion, four hundred forty million, two hundred one thousand, one hundred forty-two".