121030531 has 8 divisors (see below), whose sum is σ = 133722144. Its totient is φ = 108958080.

The previous prime is 121030519. The next prime is 121030549. The reversal of 121030531 is 135030121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121030531 - 2¹⁵ = 120997763 is a prime.

It is a super-2 number, since 2×121030531² = 29296778868283922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121030561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154380 + ... + 155161.

It is an arithmetic number, because the mean of its divisors is an integer number (16715268).

Almost surely, 2^121030531 is an apocalyptic number.

121030531 is a deficient number, since it is larger than the sum of its proper divisors (12691613).

121030531 is a wasteful number, since it uses less digits than its factorization.

121030531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309581.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 121030531 is about 11001.3876851968. The cubic root of 121030531 is about 494.6503411008.

Adding to 121030531 its reverse (135030121), we get a palindrome (256060652).

The spelling of 121030531 in words is "one hundred twenty-one million, thirty thousand, five hundred thirty-one".