121234431 has 8 divisors (see below), whose sum is σ = 162157104. Its totient is φ = 80567360.

The previous prime is 121234411. The next prime is 121234433. The reversal of 121234431 is 134432121.

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 121234431 - 2¹³ = 121226239 is a prime.

It is a super-2 number, since 2×121234431² = 29395574519787522, which contains 22 as substring.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 121234398 and 121234407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121234433) 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, 62790 + ... + 64691.

It is an arithmetic number, because the mean of its divisors is an integer number (20269638).

Almost surely, 2^121234431 is an apocalyptic number.

121234431 is a deficient number, since it is larger than the sum of its proper divisors (40922673).

121234431 is a wasteful number, since it uses less digits than its factorization.

121234431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127801.

The product of its digits is 576, while the sum is 21.

The square root of 121234431 is about 11010.6507982044. The cubic root of 121234431 is about 494.9279642138.

Adding to 121234431 its reverse (134432121), we get a palindrome (255666552).

The spelling of 121234431 in words is "one hundred twenty-one million, two hundred thirty-four thousand, four hundred thirty-one".