1552231530431 has 4 divisors (see below), whose sum is σ = 1566738367272. Its totient is φ = 1537724693592.

The previous prime is 1552231530413. The next prime is 1552231530433. The reversal of 1552231530431 is 1340351322551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1552231530431 is a prime.

It is a super-2 number, since 2×1552231530431² (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 = 1552231530391 and 1552231530400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552231530433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7253418260 + ... + 7253418473.

It is an arithmetic number, because the mean of its divisors is an integer number (391684591818).

Almost surely, 2^{1552231530431} is an apocalyptic number.

1552231530431 is a deficient number, since it is larger than the sum of its proper divisors (14506836841).

1552231530431 is a wasteful number, since it uses less digits than its factorization.

1552231530431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14506836840.

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 1552231530431 its reverse (1340351322551), we get a palindrome (2892582852982).

The spelling of 1552231530431 in words is "one trillion, five hundred fifty-two billion, two hundred thirty-one million, five hundred thirty thousand, four hundred thirty-one".