85213130 has 16 divisors (see below), whose sum is σ = 153644904. Its totient is φ = 34027200.

The previous prime is 85213127. The next prime is 85213133. The reversal of 85213130 is 3131258.

It is an interprime number because it is at equal distance from previous prime (85213127) and next prime (85213133).

It can be written as a sum of positive squares in 4 ways, for example, as 53392249 + 31820881 = 7307^2 + 5641^2 .

It is a super-2 number, since 2×85213130² = 14522555048793800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85213096 and 85213105.

It is not an unprimeable number, because it can be changed into a prime (85213133) 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, 821 + ... + 13080.

Almost surely, 2^85213130 is an apocalyptic number.

85213130 is a deficient number, since it is larger than the sum of its proper divisors (68431774).

85213130 is a wasteful number, since it uses less digits than its factorization.

85213130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14521.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 85213130 is about 9231.0958179406. The cubic root of 85213130 is about 440.0501492427.

Adding to 85213130 its reverse (3131258), we get a palindrome (88344388).

The spelling of 85213130 in words is "eighty-five million, two hundred thirteen thousand, one hundred thirty".