3145431433 has 4 divisors (see below), whose sum is σ = 3149378820. Its totient is φ = 3141484048.

The previous prime is 3145431427. The next prime is 3145431449. The reversal of 3145431433 is 3341345413.

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 1210135369 + 1935296064 = 34787^2 + 43992^2 .

It is a cyclic number.

It is not a de Polignac number, because 3145431433 - 2⁹ = 3145430921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3145431395 and 3145431404.

It is not an unprimeable number, because it can be changed into a prime (3145431413) 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, 1972498 + ... + 1974091.

It is an arithmetic number, because the mean of its divisors is an integer number (787344705).

Almost surely, 2^3145431433 is an apocalyptic number.

It is an amenable number.

3145431433 is a deficient number, since it is larger than the sum of its proper divisors (3947387).

3145431433 is an equidigital number, since it uses as much as digits as its factorization.

3145431433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3947386.

The product of its digits is 25920, while the sum is 31.

The square root of 3145431433 is about 56084.1460040179. The cubic root of 3145431433 is about 1465.1881834932.

Adding to 3145431433 its reverse (3341345413), we get a palindrome (6486776846).

The spelling of 3145431433 in words is "three billion, one hundred forty-five million, four hundred thirty-one thousand, four hundred thirty-three".