1213525540023 has 32 divisors (see below), whose sum is σ = 1744869772800. Its totient is φ = 748286837760.

The previous prime is 1213525540013. The next prime is 1213525540043. The reversal of 1213525540023 is 3200455253121.

It is not a de Polignac number, because 1213525540023 - 2²⁹ = 1212988669111 is a prime.

It is a super-2 number, since 2×1213525540023² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213525540013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1578373 + ... + 2217726.

It is an arithmetic number, because the mean of its divisors is an integer number (54527180400).

Almost surely, 2^{1213525540023} is an apocalyptic number.

1213525540023 is a deficient number, since it is larger than the sum of its proper divisors (531344232777).

1213525540023 is a wasteful number, since it uses less digits than its factorization.

1213525540023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3796279.

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 1213525540023 in words is "one trillion, two hundred thirteen billion, five hundred twenty-five million, five hundred forty thousand, twenty-three".