1223223001531 has 8 divisors (see below), whose sum is σ = 1262703212928. Its totient is φ = 1183744128000.

The previous prime is 1223223001493. The next prime is 1223223001537. The reversal of 1223223001531 is 1351003223221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223223001531 - 2⁹ = 1223223001019 is a prime.

It is a super-2 number, since 2×1223223001531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223223001496 and 1223223001505.

It is not an unprimeable number, because it can be changed into a prime (1223223001537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1725051 + ... + 2328571.

It is an arithmetic number, because the mean of its divisors is an integer number (157837901616).

Almost surely, 2^{1223223001531} is an apocalyptic number.

1223223001531 is a deficient number, since it is larger than the sum of its proper divisors (39480211397).

1223223001531 is an equidigital number, since it uses as much as digits as its factorization.

1223223001531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668933.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 1223223001531 its reverse (1351003223221), we get a palindrome (2574226224752).

The spelling of 1223223001531 in words is "one trillion, two hundred twenty-three billion, two hundred twenty-three million, one thousand, five hundred thirty-one".