2031035661 has 16 divisors (see below), whose sum is σ = 3014737920. Its totient is φ = 1351415520.

The previous prime is 2031035651. The next prime is 2031035663. The reversal of 2031035661 is 1665301302.

It is not a de Polignac number, because 2031035661 - 2⁶ = 2031035597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031035663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58125 + ... + 86258.

It is an arithmetic number, because the mean of its divisors is an integer number (188421120).

Almost surely, 2^2031035661 is an apocalyptic number.

It is an amenable number.

2031035661 is a deficient number, since it is larger than the sum of its proper divisors (983702259).

2031035661 is a wasteful number, since it uses less digits than its factorization.

2031035661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144913 (or 144907 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 2031035661 is about 45067.0130028605. The cubic root of 2031035661 is about 1266.4047076548.

Adding to 2031035661 its reverse (1665301302), we get a palindrome (3696336963).

The spelling of 2031035661 in words is "two billion, thirty-one million, thirty-five thousand, six hundred sixty-one".