1653223031 has 4 divisors (see below), whose sum is σ = 1663753272. Its totient is φ = 1642692792.

The previous prime is 1653223009. The next prime is 1653223063. The reversal of 1653223031 is 1303223561.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1653223031 is a prime.

It is a super-2 number, since 2×1653223031² = 5466292780457653922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1653223331) 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, 5264885 + ... + 5265198.

It is an arithmetic number, because the mean of its divisors is an integer number (415938318).

Almost surely, 2^1653223031 is an apocalyptic number.

1653223031 is a deficient number, since it is larger than the sum of its proper divisors (10530241).

1653223031 is a wasteful number, since it uses less digits than its factorization.

1653223031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10530240.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 1653223031 is about 40659.8454374829. The cubic root of 1653223031 is about 1182.4346531388.

Adding to 1653223031 its reverse (1303223561), we get a palindrome (2956446592).

The spelling of 1653223031 in words is "one billion, six hundred fifty-three million, two hundred twenty-three thousand, thirty-one".