220345011431 has 4 divisors (see below), whose sum is σ = 220484560200. Its totient is φ = 220205462664.

The previous prime is 220345011407. The next prime is 220345011457. The reversal of 220345011431 is 134110543022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220345011431 - 2¹⁰ = 220345010407 is a prime.

It is a super-2 number, since 2×220345011431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220345011431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220345011461) 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, 69772016 + ... + 69775173.

It is an arithmetic number, because the mean of its divisors is an integer number (55121140050).

Almost surely, 2^220345011431 is an apocalyptic number.

220345011431 is a deficient number, since it is larger than the sum of its proper divisors (139548769).

220345011431 is a wasteful number, since it uses less digits than its factorization.

220345011431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139548768.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 220345011431 its reverse (134110543022), we get a palindrome (354455554453).

The spelling of 220345011431 in words is "two hundred twenty billion, three hundred forty-five million, eleven thousand, four hundred thirty-one".