231533012221413 has 8 divisors (see below), whose sum is σ = 352812209099328. Its totient is φ = 132304578412224.

The previous prime is 231533012221411. The next prime is 231533012221439. The reversal of 231533012221413 is 314122210335132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231533012221413 - 2¹ = 231533012221411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231533012221411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5512690767156 + ... + 5512690767197.

It is an arithmetic number, because the mean of its divisors is an integer number (44101526137416).

Almost surely, 2^{231533012221413} is an apocalyptic number.

It is an amenable number.

231533012221413 is a deficient number, since it is larger than the sum of its proper divisors (121279196877915).

231533012221413 is a wasteful number, since it uses less digits than its factorization.

231533012221413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11025381534363.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 231533012221413 its reverse (314122210335132), we get a palindrome (545655222556545).

The spelling of 231533012221413 in words is "two hundred thirty-one trillion, five hundred thirty-three billion, twelve million, two hundred twenty-one thousand, four hundred thirteen".