3111302145 has 32 divisors (see below), whose sum is σ = 5693349888. Its totient is φ = 1421281728.

The previous prime is 3111302143. The next prime is 3111302153. The reversal of 3111302145 is 5412031113.

It is not a de Polignac number, because 3111302145 - 2¹ = 3111302143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (3111302143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146172 + ... + 166098.

It is an arithmetic number, because the mean of its divisors is an integer number (177917184).

Almost surely, 2^3111302145 is an apocalyptic number.

3111302145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3111302145 is a deficient number, since it is larger than the sum of its proper divisors (2582047743).

3111302145 is a wasteful number, since it uses less digits than its factorization.

3111302145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21429.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 3111302145 is about 55779.0475447547. The cubic root of 3111302145 is about 1459.8695925620.

Adding to 3111302145 its reverse (5412031113), we get a palindrome (8523333258).

The spelling of 3111302145 in words is "three billion, one hundred eleven million, three hundred two thousand, one hundred forty-five".