102213031 has 4 divisors (see below), whose sum is σ = 102265200. Its totient is φ = 102160864.

The previous prime is 102213019. The next prime is 102213037. The reversal of 102213031 is 130312201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130312201 = 103 ⋅1265167.

It is a cyclic number.

It is not a de Polignac number, because 102213031 - 2⁹ = 102212519 is a prime.

It is a super-2 number, since 2×102213031² = 20895007412413922, 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 (102213037) 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, 23026 + ... + 27103.

It is an arithmetic number, because the mean of its divisors is an integer number (25566300).

Almost surely, 2^102213031 is an apocalyptic number.

102213031 is a deficient number, since it is larger than the sum of its proper divisors (52169).

102213031 is an equidigital number, since it uses as much as digits as its factorization.

102213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52168.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 102213031 is about 10110.0460434164. The cubic root of 102213031 is about 467.5579247052.

Adding to 102213031 its reverse (130312201), we get a palindrome (232525232).

The spelling of 102213031 in words is "one hundred two million, two hundred thirteen thousand, thirty-one".