231213101333134 has 4 divisors (see below), whose sum is σ = 346819651999704. Its totient is φ = 115606550666566.

The previous prime is 231213101333059. The next prime is 231213101333141. The reversal of 231213101333134 is 431333101312132.

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

It is a junction number, because it is equal to n+sod(n) for n = 231213101333096 and 231213101333105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57803275333282 + ... + 57803275333285.

It is an arithmetic number, because the mean of its divisors is an integer number (86704912999926).

Almost surely, 2^{231213101333134} is an apocalyptic number.

231213101333134 is a deficient number, since it is larger than the sum of its proper divisors (115606550666570).

231213101333134 is a wasteful number, since it uses less digits than its factorization.

231213101333134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115606550666569.

The product of its (nonzero) digits is 11664, while the sum is 31.

Adding to 231213101333134 its reverse (431333101312132), we get a palindrome (662546202645266).

The spelling of 231213101333134 in words is "two hundred thirty-one trillion, two hundred thirteen billion, one hundred one million, three hundred thirty-three thousand, one hundred thirty-four".