220520233314431 has 4 divisors (see below), whose sum is σ = 220521788946000. Its totient is φ = 220518677682864.

The previous prime is 220520233314421. The next prime is 220520233314457. The reversal of 220520233314431 is 134413332025022.

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 220520233314431 - 2¹⁰ = 220520233313407 is a prime.

It is a super-2 number, since 2×220520233314431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220520233314391 and 220520233314400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220520233314421) 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, 777603131 + ... + 777886668.

It is an arithmetic number, because the mean of its divisors is an integer number (55130447236500).

Almost surely, 2^{220520233314431} is an apocalyptic number.

220520233314431 is a deficient number, since it is larger than the sum of its proper divisors (1555631569).

220520233314431 is a wasteful number, since it uses less digits than its factorization.

220520233314431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555631568.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 220520233314431 its reverse (134413332025022), we get a palindrome (354933565339453).

The spelling of 220520233314431 in words is "two hundred twenty trillion, five hundred twenty billion, two hundred thirty-three million, three hundred fourteen thousand, four hundred thirty-one".