3401391331 has 16 divisors (see below), whose sum is σ = 4003630848. Its totient is φ = 2859724800.

The previous prime is 3401391311. The next prime is 3401391347. The reversal of 3401391331 is 1331931043.

It is a cyclic number.

It is not a de Polignac number, because 3401391331 - 2¹⁷ = 3401260259 is a prime.

It is a super-2 number, since 2×3401391331² = 23138925973203903122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3401391331.

It is not an unprimeable number, because it can be changed into a prime (3401391311) 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, 241390 + ... + 255091.

It is an arithmetic number, because the mean of its divisors is an integer number (250226928).

Almost surely, 2^3401391331 is an apocalyptic number.

3401391331 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3401391331 is a deficient number, since it is larger than the sum of its proper divisors (602239517).

3401391331 is a wasteful number, since it uses less digits than its factorization.

3401391331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496542.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 3401391331 is about 58321.4482930594. The cubic root of 3401391331 is about 1503.8996796945.

The spelling of 3401391331 in words is "three billion, four hundred one million, three hundred ninety-one thousand, three hundred thirty-one".