1213100526 has 32 divisors (see below), whose sum is σ = 2686278528. Its totient is φ = 362118240.

The previous prime is 1213100521. The next prime is 1213100531. The reversal of 1213100526 is 6250013121.

1213100526 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1213100521) and next prime (1213100531).

It is a super-2 number, since 2×1213100526² = 2943225772362953352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213100521) 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, 132745 + ... + 141588.

It is an arithmetic number, because the mean of its divisors is an integer number (83946204).

Almost surely, 2^1213100526 is an apocalyptic number.

1213100526 is an abundant number, since it is smaller than the sum of its proper divisors (1473178002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213100526 is a wasteful number, since it uses less digits than its factorization.

1213100526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274416.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1213100526 is about 34829.5926763435. The cubic root of 1213100526 is about 1066.5116333056.

Adding to 1213100526 its reverse (6250013121), we get a palindrome (7463113647).

The spelling of 1213100526 in words is "one billion, two hundred thirteen million, one hundred thousand, five hundred twenty-six".