121313983 has 18 divisors (see below), whose sum is σ = 145739832. Its totient is φ = 98912880.

The previous prime is 121313981. The next prime is 121313987. The reversal of 121313983 is 389313121.

It is not a de Polignac number, because 121313983 - 2¹ = 121313981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121313981) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 670153 + ... + 670333.

Almost surely, 2^121313983 is an apocalyptic number.

121313983 is a deficient number, since it is larger than the sum of its proper divisors (24425849).

121313983 is an frugal number, since it uses more digits than its factorization.

121313983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 211 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 121313983 is about 11014.2627079619. The cubic root of 121313983 is about 495.0361950202.

The spelling of 121313983 in words is "one hundred twenty-one million, three hundred thirteen thousand, nine hundred eighty-three".