31145303611 has 8 divisors (see below), whose sum is σ = 32986202400. Its totient is φ = 29305385088.

The previous prime is 31145303549. The next prime is 31145303617. The reversal of 31145303611 is 11630354113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31145303611 - 2¹⁵ = 31145270843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31145303611.

It is not an unprimeable number, because it can be changed into a prime (31145303617) 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 7 ways as a sum of consecutive naturals, for example, 179136 + ... + 307213.

It is an arithmetic number, because the mean of its divisors is an integer number (4123275300).

Almost surely, 2^31145303611 is an apocalyptic number.

31145303611 is a deficient number, since it is larger than the sum of its proper divisors (1840898789).

31145303611 is a wasteful number, since it uses less digits than its factorization.

31145303611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490133.

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 31145303611 its reverse (11630354113), we get a palindrome (42775657724).

The spelling of 31145303611 in words is "thirty-one billion, one hundred forty-five million, three hundred three thousand, six hundred eleven".