1315137123 has 6 divisors (see below), whose sum is σ = 1899642524. Its totient is φ = 876758076.

The previous prime is 1315137077. The next prime is 1315137133. The reversal of 1315137123 is 3217315131.

It is a happy number.

1315137123 is a `hidden beast` number, since 131 + 513 + 7 + 12 + 3 = 666.

It is not a de Polignac number, because 1315137123 - 2¹⁶ = 1315071587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315137133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73063165 + ... + 73063182.

Almost surely, 2^1315137123 is an apocalyptic number.

1315137123 is a deficient number, since it is larger than the sum of its proper divisors (584505401).

1315137123 is a wasteful number, since it uses less digits than its factorization.

1315137123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146126353 (or 146126350 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 1315137123 is about 36264.8193570573. The cubic root of 1315137123 is about 1095.6125852363.

The spelling of 1315137123 in words is "one billion, three hundred fifteen million, one hundred thirty-seven thousand, one hundred twenty-three".