3291070081 has 16 divisors (see below), whose sum is σ = 3662675968. Its totient is φ = 2936606400.

The previous prime is 3291070073. The next prime is 3291070093. The reversal of 3291070081 is 1800701923.

It is not a de Polignac number, because 3291070081 - 2³ = 3291070073 is a prime.

It is a super-2 number, since 2×3291070081² = 21662284556106693122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3291070031) 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, 397696 + ... + 405886.

It is an arithmetic number, because the mean of its divisors is an integer number (228917248).

Almost surely, 2^3291070081 is an apocalyptic number.

3291070081 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3291070081 is a deficient number, since it is larger than the sum of its proper divisors (371605887).

3291070081 is a wasteful number, since it uses less digits than its factorization.

3291070081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9232.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 3291070081 is about 57367.8488441043. The cubic root of 3291070081 is about 1487.4614192945.

The spelling of 3291070081 in words is "three billion, two hundred ninety-one million, seventy thousand, eighty-one".