1523413123 has 4 divisors (see below), whose sum is σ = 1575944640. Its totient is φ = 1470881608.

The previous prime is 1523413121. The next prime is 1523413147. The reversal of 1523413123 is 3213143251.

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 1523413123 - 2¹ = 1523413121 is a prime.

It is a super-2 number, since 2×1523413123² = 4641575086657226258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1523413121) 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, 26265715 + ... + 26265772.

It is an arithmetic number, because the mean of its divisors is an integer number (393986160).

Almost surely, 2^1523413123 is an apocalyptic number.

1523413123 is a deficient number, since it is larger than the sum of its proper divisors (52531517).

1523413123 is an equidigital number, since it uses as much as digits as its factorization.

1523413123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52531516.

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

The square root of 1523413123 is about 39030.9252132203. The cubic root of 1523413123 is about 1150.6393730022.

Adding to 1523413123 its reverse (3213143251), we get a palindrome (4736556374).

The spelling of 1523413123 in words is "one billion, five hundred twenty-three million, four hundred thirteen thousand, one hundred twenty-three".