31044121151 has 4 divisors (see below), whose sum is σ = 31223567112. Its totient is φ = 30864675192.

The previous prime is 31044121127. The next prime is 31044121169. The reversal of 31044121151 is 15112144013.

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 31044121151 - 2¹⁰ = 31044120127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31044121181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89722721 + ... + 89723066.

It is an arithmetic number, because the mean of its divisors is an integer number (7805891778).

Almost surely, 2^31044121151 is an apocalyptic number.

31044121151 is a deficient number, since it is larger than the sum of its proper divisors (179445961).

31044121151 is a wasteful number, since it uses less digits than its factorization.

31044121151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179445960.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 31044121151 its reverse (15112144013), we get a palindrome (46156265164).

The spelling of 31044121151 in words is "thirty-one billion, forty-four million, one hundred twenty-one thousand, one hundred fifty-one".