312542534 has 4 divisors (see below), whose sum is σ = 468813804. Its totient is φ = 156271266.

The previous prime is 312542521. The next prime is 312542539. The reversal of 312542534 is 435245213.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 312542497 and 312542506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312542539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78135632 + ... + 78135635.

It is an arithmetic number, because the mean of its divisors is an integer number (117203451).

Almost surely, 2^312542534 is an apocalyptic number.

312542534 is a deficient number, since it is larger than the sum of its proper divisors (156271270).

312542534 is a wasteful number, since it uses less digits than its factorization.

312542534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156271269.

The product of its digits is 14400, while the sum is 29.

The square root of 312542534 is about 17678.8725319235. The cubic root of 312542534 is about 678.6351907624.

Adding to 312542534 its reverse (435245213), we get a palindrome (747787747).

The spelling of 312542534 in words is "three hundred twelve million, five hundred forty-two thousand, five hundred thirty-four".