121456631 has 2 divisors, whose sum is σ = 121456632. Its totient is φ = 121456630.

The previous prime is 121456627. The next prime is 121456649. The reversal of 121456631 is 136654121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121456631 - 2² = 121456627 is a prime.

It is a super-2 number, since 2×121456631² = 29503426427740322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121456594 and 121456603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121456651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60728315 + 60728316.

It is an arithmetic number, because the mean of its divisors is an integer number (60728316).

Almost surely, 2^121456631 is an apocalyptic number.

121456631 is a deficient number, since it is larger than the sum of its proper divisors (1).

121456631 is an equidigital number, since it uses as much as digits as its factorization.

121456631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 121456631 is about 11020.7364091516. The cubic root of 121456631 is about 495.2301497520.

The spelling of 121456631 in words is "one hundred twenty-one million, four hundred fifty-six thousand, six hundred thirty-one".