31361418320140 has 24 divisors (see below), whose sum is σ = 66091695722640. Its totient is φ = 12500240232768.

The previous prime is 31361418320107. The next prime is 31361418320189. The reversal of 31361418320140 is 4102381416313.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31361418320140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2770437655 + ... + 2770448974.

It is an arithmetic number, because the mean of its divisors is an integer number (2753820655110).

Almost surely, 2^{31361418320140} is an apocalyptic number.

It is an amenable number.

31361418320140 is an abundant number, since it is smaller than the sum of its proper divisors (34730277402500).

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

31361418320140 is a wasteful number, since it uses less digits than its factorization.

31361418320140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5540886921 (or 5540886919 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

Adding to 31361418320140 its reverse (4102381416313), we get a palindrome (35463799736453).

The spelling of 31361418320140 in words is "thirty-one trillion, three hundred sixty-one billion, four hundred eighteen million, three hundred twenty thousand, one hundred forty".