121631935 has 16 divisors (see below), whose sum is σ = 154151424. Its totient is φ = 91946272.

The previous prime is 121631933. The next prime is 121631959. The reversal of 121631935 is 539136121.

It is a happy number.

It is not a de Polignac number, because 121631935 - 2¹ = 121631933 is a prime.

It is a super-2 number, since 2×121631935² = 29588655223688450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121631897 and 121631906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121631933) 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, 3174 + ... + 15916.

It is an arithmetic number, because the mean of its divisors is an integer number (9634464).

Almost surely, 2^121631935 is an apocalyptic number.

121631935 is a deficient number, since it is larger than the sum of its proper divisors (32519489).

121631935 is a wasteful number, since it uses less digits than its factorization.

121631935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12854.

The product of its digits is 4860, while the sum is 31.

The square root of 121631935 is about 11028.6869118676. The cubic root of 121631935 is about 495.4682981086.

The spelling of 121631935 in words is "one hundred twenty-one million, six hundred thirty-one thousand, nine hundred thirty-five".