231213707 has 8 divisors (see below), whose sum is σ = 234709584. Its totient is φ = 227743488.

The previous prime is 231213691. The next prime is 231213721. The reversal of 231213707 is 707312132.

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

It is a cyclic number.

It is not a de Polignac number, because 231213707 - 2⁴ = 231213691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231213737) 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, 12143 + ... + 24695.

It is an arithmetic number, because the mean of its divisors is an integer number (29338698).

Almost surely, 2^231213707 is an apocalyptic number.

231213707 is a deficient number, since it is larger than the sum of its proper divisors (3495877).

231213707 is a wasteful number, since it uses less digits than its factorization.

231213707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12829.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 231213707 is about 15205.7129724324. The cubic root of 231213707 is about 613.7684009123.

Adding to 231213707 its reverse (707312132), we get a palindrome (938525839).

The spelling of 231213707 in words is "two hundred thirty-one million, two hundred thirteen thousand, seven hundred seven".