121317131 has 16 divisors (see below), whose sum is σ = 132701184. Its totient is φ = 110242944.

The previous prime is 121317113. The next prime is 121317137. The reversal of 121317131 is 131713121.

It is a cyclic number.

It is not a de Polignac number, because 121317131 - 2⁶ = 121317067 is a prime.

It is a super-2 number, since 2×121317131² = 29435692548142322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121317137) 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, 325061 + ... + 325433.

It is an arithmetic number, because the mean of its divisors is an integer number (8293824).

Almost surely, 2^121317131 is an apocalyptic number.

121317131 is a deficient number, since it is larger than the sum of its proper divisors (11384053).

121317131 is a wasteful number, since it uses less digits than its factorization.

121317131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710.

The product of its digits is 126, while the sum is 20.

The square root of 121317131 is about 11014.4056126511. The cubic root of 121317131 is about 495.0404769132.

The spelling of 121317131 in words is "one hundred twenty-one million, three hundred seventeen thousand, one hundred thirty-one".