655110431 has 4 divisors (see below), whose sum is σ = 655409472. Its totient is φ = 654811392.

The previous prime is 655110427. The next prime is 655110473. The reversal of 655110431 is 134011556.

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 655110431 - 2² = 655110427 is a prime.

It is a super-2 number, since 2×655110431² = 858339353610011522, which 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 655110431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655112431) 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, 146210 + ... + 150623.

It is an arithmetic number, because the mean of its divisors is an integer number (163852368).

Almost surely, 2^655110431 is an apocalyptic number.

655110431 is a deficient number, since it is larger than the sum of its proper divisors (299041).

655110431 is a wasteful number, since it uses less digits than its factorization.

655110431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299040.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 655110431 is about 25595.1251413233. The cubic root of 655110431 is about 868.5033637915.

Adding to 655110431 its reverse (134011556), we get a palindrome (789121987).

The spelling of 655110431 in words is "six hundred fifty-five million, one hundred ten thousand, four hundred thirty-one".