31120201340 has 12 divisors (see below), whose sum is σ = 65352422856. Its totient is φ = 12448080528.

The previous prime is 31120201283. The next prime is 31120201349. The reversal of 31120201340 is 4310202113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120201349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778005014 + ... + 778005053.

It is an arithmetic number, because the mean of its divisors is an integer number (5446035238).

Almost surely, 2^31120201340 is an apocalyptic number.

It is an amenable number.

31120201340 is an abundant number, since it is smaller than the sum of its proper divisors (34232221516).

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

31120201340 is a wasteful number, since it uses less digits than its factorization.

31120201340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556010076 (or 1556010074 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31120201340 its reverse (4310202113), we get a palindrome (35430403453).

The spelling of 31120201340 in words is "thirty-one billion, one hundred twenty million, two hundred one thousand, three hundred forty".