121475531 has 4 divisors (see below), whose sum is σ = 127869000. Its totient is φ = 115082064.

The previous prime is 121475527. The next prime is 121475593. The reversal of 121475531 is 135574121.

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 121475531 - 2² = 121475527 is a prime.

It is a super-2 number, since 2×121475531² = 29512609263463922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121475494 and 121475503.

It is not an unprimeable number, because it can be changed into a prime (121475521) 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, 3196706 + ... + 3196743.

It is an arithmetic number, because the mean of its divisors is an integer number (31967250).

Almost surely, 2^121475531 is an apocalyptic number.

121475531 is a deficient number, since it is larger than the sum of its proper divisors (6393469).

121475531 is an equidigital number, since it uses as much as digits as its factorization.

121475531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6393468.

The product of its digits is 4200, while the sum is 29.

The square root of 121475531 is about 11021.5938502560. The cubic root of 121475531 is about 495.2558361892.

The spelling of 121475531 in words is "one hundred twenty-one million, four hundred seventy-five thousand, five hundred thirty-one".