1513351423 has 4 divisors (see below), whose sum is σ = 1513768680. Its totient is φ = 1512934168.

The previous prime is 1513351421. The next prime is 1513351471. The reversal of 1513351423 is 3241533151.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1513351423 - 2¹ = 1513351421 is a prime.

It is a super-2 number, since 2×1513351423² = 4580465058992249858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1513351391 and 1513351400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1513351421) 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, 203140 + ... + 210457.

It is an arithmetic number, because the mean of its divisors is an integer number (378442170).

Almost surely, 2^1513351423 is an apocalyptic number.

1513351423 is a deficient number, since it is larger than the sum of its proper divisors (417257).

1513351423 is an equidigital number, since it uses as much as digits as its factorization.

1513351423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417256.

The product of its digits is 5400, while the sum is 28.

The square root of 1513351423 is about 38901.8177338797. The cubic root of 1513351423 is about 1148.1005627548.

Adding to 1513351423 its reverse (3241533151), we get a palindrome (4754884574).

The spelling of 1513351423 in words is "one billion, five hundred thirteen million, three hundred fifty-one thousand, four hundred twenty-three".