121086431 has 2 divisors, whose sum is σ = 121086432. Its totient is φ = 121086430.

The previous prime is 121086401. The next prime is 121086457. The reversal of 121086431 is 134680121.

It is an a-pointer prime, because the next prime (121086457) can be obtained adding 121086431 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121086431 - 2⁶ = 121086367 is a prime.

It is a super-2 number, since 2×121086431² = 29323847544635522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121086431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121086401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60543215 + 60543216.

It is an arithmetic number, because the mean of its divisors is an integer number (60543216).

Almost surely, 2^121086431 is an apocalyptic number.

121086431 is a deficient number, since it is larger than the sum of its proper divisors (1).

121086431 is an equidigital number, since it uses as much as digits as its factorization.

121086431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 121086431 is about 11003.9279804986. The cubic root of 121086431 is about 494.7264835912.

The spelling of 121086431 in words is "one hundred twenty-one million, eighty-six thousand, four hundred thirty-one".