1213110140 has 48 divisors (see below), whose sum is σ = 2942612064. Its totient is φ = 415180800.

The previous prime is 1213110061. The next prime is 1213110149. The reversal of 1213110140 is 410113121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213110149) 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, 158441 + ... + 165920.

It is an arithmetic number, because the mean of its divisors is an integer number (61304418).

Almost surely, 2^1213110140 is an apocalyptic number.

1213110140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213110140 is an abundant number, since it is smaller than the sum of its proper divisors (1729501924).

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

1213110140 is a wasteful number, since it uses less digits than its factorization.

1213110140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324398 (or 324396 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1213110140 is about 34829.7306908911. The cubic root of 1213110140 is about 1066.5144507187.

Adding to 1213110140 its reverse (410113121), we get a palindrome (1623223261).

The spelling of 1213110140 in words is "one billion, two hundred thirteen million, one hundred ten thousand, one hundred forty".