121432311 has 64 divisors (see below), whose sum is σ = 241597440. Its totient is φ = 58216320.

The previous prime is 121432291. The next prime is 121432321. The reversal of 121432311 is 113234121.

It is not a de Polignac number, because 121432311 - 2⁶ = 121432247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121432321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24781 + ... + 29273.

It is an arithmetic number, because the mean of its divisors is an integer number (3774960).

Almost surely, 2^121432311 is an apocalyptic number.

121432311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121432311 is a deficient number, since it is larger than the sum of its proper divisors (120165129).

121432311 is a wasteful number, since it uses less digits than its factorization.

121432311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533 (or 4527 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 121432311 is about 11019.6329793691. The cubic root of 121432311 is about 495.1970932305.

Adding to 121432311 its reverse (113234121), we get a palindrome (234666432).

The spelling of 121432311 in words is "one hundred twenty-one million, four hundred thirty-two thousand, three hundred eleven".