3420534731 has 4 divisors (see below), whose sum is σ = 3420652632. Its totient is φ = 3420416832.

The previous prime is 3420534727. The next prime is 3420534737. The reversal of 3420534731 is 1374350243.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1374350243 = 7 ⋅196335749.

It is a cyclic number.

It is not a de Polignac number, because 3420534731 - 2² = 3420534727 is a prime.

It is a super-2 number, since 2×3420534731² = 23400115691954484722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3420534737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18395 + ... + 84731.

It is an arithmetic number, because the mean of its divisors is an integer number (855163158).

Almost surely, 2^3420534731 is an apocalyptic number.

3420534731 is a deficient number, since it is larger than the sum of its proper divisors (117901).

3420534731 is an equidigital number, since it uses as much as digits as its factorization.

3420534731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117900.

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 3420534731 is about 58485.3377437457. The cubic root of 3420534731 is about 1506.7157734591.

Adding to 3420534731 its reverse (1374350243), we get a palindrome (4794884974).

The spelling of 3420534731 in words is "three billion, four hundred twenty million, five hundred thirty-four thousand, seven hundred thirty-one".