312633142 has 4 divisors (see below), whose sum is σ = 468949716. Its totient is φ = 156316570.

The previous prime is 312633127. The next prime is 312633149. The reversal of 312633142 is 241336213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241336213 = 179 ⋅1348247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312633149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78158284 + ... + 78158287.

It is an arithmetic number, because the mean of its divisors is an integer number (117237429).

Almost surely, 2^312633142 is an apocalyptic number.

312633142 is a deficient number, since it is larger than the sum of its proper divisors (156316574).

312633142 is a wasteful number, since it uses less digits than its factorization.

312633142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156316573.

The product of its digits is 2592, while the sum is 25.

The square root of 312633142 is about 17681.4349530800. The cubic root of 312633142 is about 678.7007645958.

Adding to 312633142 its reverse (241336213), we get a palindrome (553969355).

The spelling of 312633142 in words is "three hundred twelve million, six hundred thirty-three thousand, one hundred forty-two".