2051064431 has 4 divisors (see below), whose sum is σ = 2208838632. Its totient is φ = 1893290232.

The previous prime is 2051064419. The next prime is 2051064451. The reversal of 2051064431 is 1344601502.

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

It is a cyclic number.

It is not a de Polignac number, because 2051064431 - 2¹⁸ = 2050802287 is a prime.

It is a super-2 number, since 2×2051064431² = 8413730600226707522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2051064431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051064451) 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, 78887081 + ... + 78887106.

It is an arithmetic number, because the mean of its divisors is an integer number (552209658).

Almost surely, 2^2051064431 is an apocalyptic number.

2051064431 is a deficient number, since it is larger than the sum of its proper divisors (157774201).

2051064431 is a wasteful number, since it uses less digits than its factorization.

2051064431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157774200.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2051064431 is about 45288.6788391978. The cubic root of 2051064431 is about 1270.5539218819.

Adding to 2051064431 its reverse (1344601502), we get a palindrome (3395665933).

The spelling of 2051064431 in words is "two billion, fifty-one million, sixty-four thousand, four hundred thirty-one".