3401731561 has 2 divisors, whose sum is σ = 3401731562. Its totient is φ = 3401731560.

The previous prime is 3401731517. The next prime is 3401731577. The reversal of 3401731561 is 1651371043.

3401731561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3214890000 + 186841561 = 56700^2 + 13669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3401731561 is a prime.

It is a super-2 number, since 2×3401731561² = 23143555226206993442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3401771561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1700865780 + 1700865781.

It is an arithmetic number, because the mean of its divisors is an integer number (1700865781).

Almost surely, 2^3401731561 is an apocalyptic number.

It is an amenable number.

3401731561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3401731561 is an equidigital number, since it uses as much as digits as its factorization.

3401731561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 3401731561 is about 58324.3650715548. The cubic root of 3401731561 is about 1503.9498214041.

The spelling of 3401731561 in words is "three billion, four hundred one million, seven hundred thirty-one thousand, five hundred sixty-one".