231332653513 has 16 divisors (see below), whose sum is σ = 250445820240. Its totient is φ = 212408292096.

The previous prime is 231332653469. The next prime is 231332653529. The reversal of 231332653513 is 315356233132.

It can be written as a sum of positive squares in 8 ways, for example, as 32997812409 + 198334841104 = 181653^2 + 445348^2 .

It is not a de Polignac number, because 231332653513 - 2³³ = 222742718921 is a prime.

It is a super-2 number, since 2×231332653513² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231332653543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19941831 + ... + 19953427.

It is an arithmetic number, because the mean of its divisors is an integer number (15652863765).

Almost surely, 2^231332653513 is an apocalyptic number.

It is an amenable number.

231332653513 is a deficient number, since it is larger than the sum of its proper divisors (19113166727).

231332653513 is a wasteful number, since it uses less digits than its factorization.

231332653513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19596.

The product of its digits is 145800, while the sum is 37.

Adding to 231332653513 its reverse (315356233132), we get a palindrome (546688886645).

The spelling of 231332653513 in words is "two hundred thirty-one billion, three hundred thirty-two million, six hundred fifty-three thousand, five hundred thirteen".