2153531031 has 32 divisors (see below), whose sum is σ = 2997012480. Its totient is φ = 1374486624.

The previous prime is 2153531021. The next prime is 2153531059. The reversal of 2153531031 is 1301353512.

It is not a de Polignac number, because 2153531031 - 2¹¹ = 2153528983 is a prime.

It is a super-2 number, since 2×2153531031² = 9275391802959845922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2153530992 and 2153531010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153531021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1487550 + ... + 1488996.

It is an arithmetic number, because the mean of its divisors is an integer number (93656640).

Almost surely, 2^2153531031 is an apocalyptic number.

2153531031 is a deficient number, since it is larger than the sum of its proper divisors (843481449).

2153531031 is a wasteful number, since it uses less digits than its factorization.

2153531031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 2153531031 is about 46406.1529433328. The cubic root of 2153531031 is about 1291.3690633095.

Adding to 2153531031 its reverse (1301353512), we get a palindrome (3454884543).

The spelling of 2153531031 in words is "two billion, one hundred fifty-three million, five hundred thirty-one thousand, thirty-one".