102213123031 has 4 divisors (see below), whose sum is σ = 102748270464. Its totient is φ = 101677975600.

The previous prime is 102213123029. The next prime is 102213123049. The reversal of 102213123031 is 130321312201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130321312201 = 2621 ⋅49721981.

It is a cyclic number.

It is not a de Polignac number, because 102213123031 - 2¹ = 102213123029 is a prime.

It is a super-2 number, since 2×102213123031² (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 (102213123011) 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, 267573430 + ... + 267573811.

It is an arithmetic number, because the mean of its divisors is an integer number (25687067616).

Almost surely, 2^102213123031 is an apocalyptic number.

102213123031 is a deficient number, since it is larger than the sum of its proper divisors (535147433).

102213123031 is an equidigital number, since it uses as much as digits as its factorization.

102213123031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535147432.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 102213123031 its reverse (130321312201), we get a palindrome (232534435232).

The spelling of 102213123031 in words is "one hundred two billion, two hundred thirteen million, one hundred twenty-three thousand, thirty-one".