3149781401 has 4 divisors (see below), whose sum is σ = 3392072292. Its totient is φ = 2907490512.

The previous prime is 3149781389. The next prime is 3149781407. The reversal of 3149781401 is 1041879413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1191630400 + 1958151001 = 34520^2 + 44251^2 .

It is a cyclic number.

It is not a de Polignac number, because 3149781401 - 2¹⁰ = 3149780377 is a prime.

It is a super-2 number, since 2×3149781401² = 19842245748171045602, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (3149781407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121145426 + ... + 121145451.

It is an arithmetic number, because the mean of its divisors is an integer number (848018073).

Almost surely, 2^3149781401 is an apocalyptic number.

It is an amenable number.

3149781401 is a deficient number, since it is larger than the sum of its proper divisors (242290891).

3149781401 is a wasteful number, since it uses less digits than its factorization.

3149781401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242290890.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 3149781401 is about 56122.9133331476. The cubic root of 3149781401 is about 1465.8632987114.

The spelling of 3149781401 in words is "three billion, one hundred forty-nine million, seven hundred eighty-one thousand, four hundred one".