10421040023531 has 16 divisors (see below), whose sum is σ = 10857703661280. Its totient is φ = 9993115883520.

The previous prime is 10421040023519. The next prime is 10421040023551. The reversal of 10421040023531 is 13532004012401.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10421040023531 - 2⁶ = 10421040023467 is a prime.

It is a super-2 number, since 2×10421040023531² (a number of 27 digits) contains 22 as substring.

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 10421040023531.

It is not an unprimeable number, because it can be changed into a prime (10421040023551) 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, 16765655 + ... + 17376111.

It is an arithmetic number, because the mean of its divisors is an integer number (678606478830).

Almost surely, 2^{10421040023531} is an apocalyptic number.

10421040023531 is a deficient number, since it is larger than the sum of its proper divisors (436663637749).

10421040023531 is an equidigital number, since it uses as much as digits as its factorization.

10421040023531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617614.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 10421040023531 its reverse (13532004012401), we get a palindrome (23953044035932).

The spelling of 10421040023531 in words is "ten trillion, four hundred twenty-one billion, forty million, twenty-three thousand, five hundred thirty-one".