121465831 has 2 divisors, whose sum is σ = 121465832. Its totient is φ = 121465830.

The previous prime is 121465811. The next prime is 121465849. The reversal of 121465831 is 138564121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121465831 is a prime.

It is a super-2 number, since 2×121465831² = 29507896201041122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121465793 and 121465802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121465811) 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, 60732915 + 60732916.

It is an arithmetic number, because the mean of its divisors is an integer number (60732916).

Almost surely, 2^121465831 is an apocalyptic number.

121465831 is a deficient number, since it is larger than the sum of its proper divisors (1).

121465831 is an equidigital number, since it uses as much as digits as its factorization.

121465831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 121465831 is about 11021.1537962230. The cubic root of 121465831 is about 495.2426535358.

The spelling of 121465831 in words is "one hundred twenty-one million, four hundred sixty-five thousand, eight hundred thirty-one".