2031147442 has 4 divisors (see below), whose sum is σ = 3046721166. Its totient is φ = 1015573720.

The previous prime is 2031147361. The next prime is 2031147463. The reversal of 2031147442 is 2447411302.

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

It can be written as a sum of positive squares in only one way, i.e., 1253797281 + 777350161 = 35409^2 + 27881^2 .

It is a super-2 number, since 2×2031147442² = 8251119862286286728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2031147442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507786859 + ... + 507786862.

Almost surely, 2^2031147442 is an apocalyptic number.

2031147442 is a deficient number, since it is larger than the sum of its proper divisors (1015573724).

2031147442 is a wasteful number, since it uses less digits than its factorization.

2031147442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015573723.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 2031147442 is about 45068.2531500834. The cubic root of 2031147442 is about 1266.4279400366.

Adding to 2031147442 its reverse (2447411302), we get a palindrome (4478558744).

The spelling of 2031147442 in words is "two billion, thirty-one million, one hundred forty-seven thousand, four hundred forty-two".