213101010031 has 8 divisors (see below), whose sum is σ = 262278166304. Its totient is φ = 168607392480.

The previous prime is 213101009983. The next prime is 213101010079. The reversal of 213101010031 is 130010101312.

It is an interprime number because it is at equal distance from previous prime (213101009983) and next prime (213101010079).

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 213101010031 - 2⁹ = 213101009519 is a prime.

It is a super-2 number, since 2×213101010031² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 213101009993 and 213101010020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213101014031) 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, 1170884580 + ... + 1170884761.

It is an arithmetic number, because the mean of its divisors is an integer number (32784770788).

Almost surely, 2^213101010031 is an apocalyptic number.

213101010031 is a deficient number, since it is larger than the sum of its proper divisors (49177156273).

213101010031 is a wasteful number, since it uses less digits than its factorization.

213101010031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341769361.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 213101010031 its reverse (130010101312), we get a palindrome (343111111343).

The spelling of 213101010031 in words is "two hundred thirteen billion, one hundred one million, ten thousand, thirty-one".