29311121 has 4 divisors (see below), whose sum is σ = 33498432. Its totient is φ = 25123812.

The previous prime is 29311097. The next prime is 29311147. The reversal of 29311121 is 12111392.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 29311121 - 2⁶ = 29311057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 29311093 and 29311102.

It is not an unprimeable number, because it can be changed into a prime (29311181) 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, 2093645 + ... + 2093658.

It is an arithmetic number, because the mean of its divisors is an integer number (8374608).

Almost surely, 2^29311121 is an apocalyptic number.

It is an amenable number.

29311121 is a deficient number, since it is larger than the sum of its proper divisors (4187311).

29311121 is an equidigital number, since it uses as much as digits as its factorization.

29311121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187310.

The product of its digits is 108, while the sum is 20.

The square root of 29311121 is about 5413.9746028218. The cubic root of 29311121 is about 308.3264690623.

The spelling of 29311121 in words is "twenty-nine million, three hundred eleven thousand, one hundred twenty-one".