2145431501 has 8 divisors (see below), whose sum is σ = 2287978560. Its totient is φ = 2004700608.

The previous prime is 2145431489. The next prime is 2145431507. The reversal of 2145431501 is 1051345412.

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 2145431501 - 2¹⁰ = 2145430477 is a prime.

It is a super-2 number, since 2×2145431501² = 9205752650966226002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145431507) 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, 451601 + ... + 456326.

It is an arithmetic number, because the mean of its divisors is an integer number (285997320).

Almost surely, 2^2145431501 is an apocalyptic number.

It is an amenable number.

2145431501 is a deficient number, since it is larger than the sum of its proper divisors (142547059).

2145431501 is a wasteful number, since it uses less digits than its factorization.

2145431501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908083.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2145431501 is about 46318.8028882440. The cubic root of 2145431501 is about 1289.7480630929.

Adding to 2145431501 its reverse (1051345412), we get a palindrome (3196776913).

The spelling of 2145431501 in words is "two billion, one hundred forty-five million, four hundred thirty-one thousand, five hundred one".