213102303031 has 4 divisors (see below), whose sum is σ = 214657794432. Its totient is φ = 211546811632.

The previous prime is 213102303017. The next prime is 213102303049. The reversal of 213102303031 is 130303201312.

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

It is a cyclic number.

It is not a de Polignac number, because 213102303031 - 2¹⁷ = 213102171959 is a prime.

It is a super-2 number, since 2×213102303031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213102303731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777745495 + ... + 777745768.

It is an arithmetic number, because the mean of its divisors is an integer number (53664448608).

Almost surely, 2^213102303031 is an apocalyptic number.

213102303031 is a deficient number, since it is larger than the sum of its proper divisors (1555491401).

213102303031 is a wasteful number, since it uses less digits than its factorization.

213102303031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555491400.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 213102303031 its reverse (130303201312), we get a palindrome (343405504343).

The spelling of 213102303031 in words is "two hundred thirteen billion, one hundred two million, three hundred three thousand, thirty-one".