121631527 has 2 divisors, whose sum is σ = 121631528. Its totient is φ = 121631526.

The previous prime is 121631519. The next prime is 121631579. The reversal of 121631527 is 725136121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121631527 - 2³ = 121631519 is a prime.

It is a super-3 number, since 3×121631527³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121631495 and 121631504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121631327) 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, 60815763 + 60815764.

It is an arithmetic number, because the mean of its divisors is an integer number (60815764).

Almost surely, 2^121631527 is an apocalyptic number.

121631527 is a deficient number, since it is larger than the sum of its proper divisors (1).

121631527 is an equidigital number, since it uses as much as digits as its factorization.

121631527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 28.

The square root of 121631527 is about 11028.6684146365. The cubic root of 121631527 is about 495.4677441113.

Adding to 121631527 its reverse (725136121), we get a palindrome (846767648).

The spelling of 121631527 in words is "one hundred twenty-one million, six hundred thirty-one thousand, five hundred twenty-seven".