2031142081 has 4 divisors (see below), whose sum is σ = 2031297472. Its totient is φ = 2030986692.

The previous prime is 2031142063. The next prime is 2031142171. The reversal of 2031142081 is 1802411302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2031142081 - 2⁷ = 2031141953 is a prime.

It is a super-2 number, since 2×2031142081² = 8251076306418021122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2031142021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56085 + ... + 84898.

It is an arithmetic number, because the mean of its divisors is an integer number (507824368).

Almost surely, 2^2031142081 is an apocalyptic number.

It is an amenable number.

2031142081 is a deficient number, since it is larger than the sum of its proper divisors (155391).

2031142081 is a wasteful number, since it uses less digits than its factorization.

2031142081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155390.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 2031142081 is about 45068.1936735876. The cubic root of 2031142081 is about 1266.4268258345.

Adding to 2031142081 its reverse (1802411302), we get a palindrome (3833553383).

The spelling of 2031142081 in words is "two billion, thirty-one million, one hundred forty-two thousand, eighty-one".