31350651601 has 4 divisors (see below), whose sum is σ = 31579488612. Its totient is φ = 31121814592.

The previous prime is 31350651551. The next prime is 31350651617. The reversal of 31350651601 is 10615605313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10615605313 = 15467 ⋅686339.

It can be written as a sum of positive squares in 2 ways, for example, as 18157832001 + 13192819600 = 134751^2 + 114860^2 .

It is a cyclic number.

It is not a de Polignac number, because 31350651601 - 2⁹ = 31350651089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31350651671) 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, 114418300 + ... + 114418573.

It is an arithmetic number, because the mean of its divisors is an integer number (7894872153).

Almost surely, 2^31350651601 is an apocalyptic number.

It is an amenable number.

31350651601 is a deficient number, since it is larger than the sum of its proper divisors (228837011).

31350651601 is a wasteful number, since it uses less digits than its factorization.

31350651601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228837010.

The product of its (nonzero) digits is 8100, while the sum is 31.

The spelling of 31350651601 in words is "thirty-one billion, three hundred fifty million, six hundred fifty-one thousand, six hundred one".