213099263 has 16 divisors (see below), whose sum is σ = 237970656. Its totient is φ = 189557760.

The previous prime is 213099259. The next prime is 213099281. The reversal of 213099263 is 362990312.

It is not a de Polignac number, because 213099263 - 2² = 213099259 is a prime.

It is a super-2 number, since 2×213099263² = 90822591782286338, which 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 (213093263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41831 + ... + 46647.

It is an arithmetic number, because the mean of its divisors is an integer number (14873166).

Almost surely, 2^213099263 is an apocalyptic number.

213099263 is a deficient number, since it is larger than the sum of its proper divisors (24871393).

213099263 is a wasteful number, since it uses less digits than its factorization.

213099263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4954.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 213099263 is about 14597.9198175630. The cubic root of 213099263 is about 597.3020187535.

Subtracting 213099263 from its reverse (362990312), we obtain a square (149891049 = 12243²).

It can be divided in two parts, 21309926 and 3, that multiplied together give a triangular number (63929778 = T₁₁₃₀₇).

The spelling of 213099263 in words is "two hundred thirteen million, ninety-nine thousand, two hundred sixty-three".