1523131421431 has 8 divisors (see below), whose sum is σ = 1523870060544. Its totient is φ = 1522392969720.

The previous prime is 1523131421381. The next prime is 1523131421453. The reversal of 1523131421431 is 1341241313251.

It is a happy number.

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 1523131421431 - 2¹⁹ = 1523130897143 is a prime.

It is a super-2 number, since 2×1523131421431² (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 = 1523131421393 and 1523131421402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1523131427431) 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, 17824650 + ... + 17909896.

It is an arithmetic number, because the mean of its divisors is an integer number (190483757568).

Almost surely, 2^{1523131421431} is an apocalyptic number.

1523131421431 is a deficient number, since it is larger than the sum of its proper divisors (738639113).

1523131421431 is an equidigital number, since it uses as much as digits as its factorization.

1523131421431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93701.

The product of its digits is 8640, while the sum is 31.

Adding to 1523131421431 its reverse (1341241313251), we get a palindrome (2864372734682).

The spelling of 1523131421431 in words is "one trillion, five hundred twenty-three billion, one hundred thirty-one million, four hundred twenty-one thousand, four hundred thirty-one".