2145304031 has 8 divisors (see below), whose sum is σ = 2311908144. Its totient is φ = 1978925760.

The previous prime is 2145304019. The next prime is 2145304037. The reversal of 2145304031 is 1304035412.

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 2145304031 - 2¹⁸ = 2145041887 is a prime.

It is a super-2 number, since 2×2145304031² = 9204658770849697922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2145303988 and 2145304006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145304037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36461 + ... + 74966.

It is an arithmetic number, because the mean of its divisors is an integer number (288988518).

Almost surely, 2^2145304031 is an apocalyptic number.

2145304031 is a deficient number, since it is larger than the sum of its proper divisors (166604113).

2145304031 is a wasteful number, since it uses less digits than its factorization.

2145304031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112921.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2145304031 is about 46317.4268607400. The cubic root of 2145304031 is about 1289.7225192894.

Adding to 2145304031 its reverse (1304035412), we get a palindrome (3449339443).

The spelling of 2145304031 in words is "two billion, one hundred forty-five million, three hundred four thousand, thirty-one".