122133431 has 6 divisors (see below), whose sum is σ = 142073640. Its totient is φ = 104685756.

The previous prime is 122133409. The next prime is 122133433. The reversal of 122133431 is 134331221.

It is not a de Polignac number, because 122133431 - 2⁶ = 122133367 is a prime.

It is a super-4 number, since 4×122133431⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122133433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1246211 + ... + 1246308.

It is an arithmetic number, because the mean of its divisors is an integer number (23678940).

Almost surely, 2^122133431 is an apocalyptic number.

122133431 is a deficient number, since it is larger than the sum of its proper divisors (19940209).

122133431 is an equidigital number, since it uses as much as digits as its factorization.

122133431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492533 (or 2492526 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 122133431 is about 11051.3995041352. The cubic root of 122133431 is about 496.1483132066.

Adding to 122133431 its reverse (134331221), we get a palindrome (256464652).

The spelling of 122133431 in words is "one hundred twenty-two million, one hundred thirty-three thousand, four hundred thirty-one".