213001431 has 8 divisors (see below), whose sum is σ = 284070384. Its totient is φ = 141966720.

The previous prime is 213001423. The next prime is 213001469. The reversal of 213001431 is 134100312.

213001431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 213001431 - 2³ = 213001423 is a prime.

It is a super-2 number, since 2×213001431² = 90739219216095522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213001431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213001471) 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, 16141 + ... + 26201.

It is an arithmetic number, because the mean of its divisors is an integer number (35508798).

Almost surely, 2^213001431 is an apocalyptic number.

213001431 is a deficient number, since it is larger than the sum of its proper divisors (71068953).

213001431 is a wasteful number, since it uses less digits than its factorization.

213001431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17121.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 213001431 is about 14594.5685444963. The cubic root of 213001431 is about 597.2105993919.

Adding to 213001431 its reverse (134100312), we get a palindrome (347101743).

The spelling of 213001431 in words is "two hundred thirteen million, one thousand, four hundred thirty-one".