121274531 has 4 divisors (see below), whose sum is σ = 138599472. Its totient is φ = 103949592.

The previous prime is 121274519. The next prime is 121274551. The reversal of 121274531 is 135472121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121274531 - 2¹⁰ = 121273507 is a prime.

It is a super-2 number, since 2×121274531² = 29415023738539922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121274531.

It is not an unprimeable number, because it can be changed into a prime (121274501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8662460 + ... + 8662473.

It is an arithmetic number, because the mean of its divisors is an integer number (34649868).

Almost surely, 2^121274531 is an apocalyptic number.

121274531 is a deficient number, since it is larger than the sum of its proper divisors (17324941).

121274531 is an equidigital number, since it uses as much as digits as its factorization.

121274531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17324940.

The product of its digits is 1680, while the sum is 26.

The square root of 121274531 is about 11012.4716117682. The cubic root of 121274531 is about 494.9825263362.

The spelling of 121274531 in words is "one hundred twenty-one million, two hundred seventy-four thousand, five hundred thirty-one".