2153323031 has 4 divisors (see below), whose sum is σ = 2157108000. Its totient is φ = 2149538064.

The previous prime is 2153323027. The next prime is 2153323063. The reversal of 2153323031 is 1303233512.

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 2153323031 - 2² = 2153323027 is a prime.

It is a super-2 number, since 2×2153323031² = 9273600151670053922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2153322988 and 2153323006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153320031) 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, 1891631 + ... + 1892768.

It is an arithmetic number, because the mean of its divisors is an integer number (539277000).

Almost surely, 2^2153323031 is an apocalyptic number.

2153323031 is a deficient number, since it is larger than the sum of its proper divisors (3784969).

2153323031 is an equidigital number, since it uses as much as digits as its factorization.

2153323031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3784968.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 2153323031 is about 46403.9118070880. The cubic root of 2153323031 is about 1291.3274861030.

Adding to 2153323031 its reverse (1303233512), we get a palindrome (3456556543).

The spelling of 2153323031 in words is "two billion, one hundred fifty-three million, three hundred twenty-three thousand, thirty-one".