81031151035 has 8 divisors (see below), whose sum is σ = 97357580640. Its totient is φ = 64744787904.

The previous prime is 81031151011. The next prime is 81031151057. The reversal of 81031151035 is 53015113018.

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

It is a cyclic number.

It is not a de Polignac number, because 81031151035 - 2²¹ = 81029053883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81031150994 and 81031151012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10012167 + ... + 10020256.

It is an arithmetic number, because the mean of its divisors is an integer number (12169697580).

Almost surely, 2^81031151035 is an apocalyptic number.

81031151035 is a deficient number, since it is larger than the sum of its proper divisors (16326429605).

81031151035 is a wasteful number, since it uses less digits than its factorization.

81031151035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20033237.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 81031151035 in words is "eighty-one billion, thirty-one million, one hundred fifty-one thousand, thirty-five".