1213102423 has 16 divisors (see below), whose sum is σ = 1320429600. Its totient is φ = 1107840384.

The previous prime is 1213102411. The next prime is 1213102459. The reversal of 1213102423 is 3242013121.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213102423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213102423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213102403) 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, 547065 + ... + 549277.

It is an arithmetic number, because the mean of its divisors is an integer number (82526850).

Almost surely, 2^1213102423 is an apocalyptic number.

1213102423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1213102423 is a deficient number, since it is larger than the sum of its proper divisors (107327177).

1213102423 is a wasteful number, since it uses less digits than its factorization.

1213102423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1213102423 is about 34829.6199089223. The cubic root of 1213102423 is about 1066.5121892286.

Adding to 1213102423 its reverse (3242013121), we get a palindrome (4455115544).

The spelling of 1213102423 in words is "one billion, two hundred thirteen million, one hundred two thousand, four hundred twenty-three".