1011631042 has 8 divisors (see below), whose sum is σ = 1533090636. Its totient is φ = 500600832.

The previous prime is 1011631037. The next prime is 1011631043. The reversal of 1011631042 is 2401361101.

It can be written as a sum of positive squares in 2 ways, for example, as 882149401 + 129481641 = 29701^2 + 11379^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1011631043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2607103 + ... + 2607490.

Almost surely, 2^1011631042 is an apocalyptic number.

1011631042 is a deficient number, since it is larger than the sum of its proper divisors (521459594).

1011631042 is an equidigital number, since it uses as much as digits as its factorization.

1011631042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5214692.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1011631042 is about 31806.1478648390. The cubic root of 1011631042 is about 1003.8620791429.

Adding to 1011631042 its reverse (2401361101), we get a palindrome (3412992143).

The spelling of 1011631042 in words is "one billion, eleven million, six hundred thirty-one thousand, forty-two".