231420126 has 64 divisors (see below), whose sum is σ = 547725312. Its totient is φ = 63804672.

The previous prime is 231420121. The next prime is 231420139. The reversal of 231420126 is 621024132.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231420121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212355 + ... + 213441.

It is an arithmetic number, because the mean of its divisors is an integer number (8558208).

Almost surely, 2^231420126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231420126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273862656).

231420126 is an abundant number, since it is smaller than the sum of its proper divisors (316305186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231420126 is a wasteful number, since it uses less digits than its factorization.

231420126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273.

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

The square root of 231420126 is about 15212.4990057518. The cubic root of 231420126 is about 613.9509964534.

Adding to 231420126 its reverse (621024132), we get a palindrome (852444258).

The spelling of 231420126 in words is "two hundred thirty-one million, four hundred twenty thousand, one hundred twenty-six".