220040424431 has 2 divisors, whose sum is σ = 220040424432. Its totient is φ = 220040424430.

The previous prime is 220040424419. The next prime is 220040424451. The reversal of 220040424431 is 134424040022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220040424431 - 2¹⁴ = 220040408047 is a prime.

It is a super-2 number, since 2×220040424431² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220040424431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220040424451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110020212215 + 110020212216.

It is an arithmetic number, because the mean of its divisors is an integer number (110020212216).

Almost surely, 2^220040424431 is an apocalyptic number.

220040424431 is a deficient number, since it is larger than the sum of its proper divisors (1).

220040424431 is an equidigital number, since it uses as much as digits as its factorization.

220040424431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 220040424431 its reverse (134424040022), we get a palindrome (354464464453).

The spelling of 220040424431 in words is "two hundred twenty billion, forty million, four hundred twenty-four thousand, four hundred thirty-one".