2145013431 has 16 divisors (see below), whose sum is σ = 3121386240. Its totient is φ = 1299438720.

The previous prime is 2145013397. The next prime is 2145013433. The reversal of 2145013431 is 1343105412.

It is a happy number.

It is not a de Polignac number, because 2145013431 - 2¹⁴ = 2144997047 is a prime.

It is a super-2 number, since 2×2145013431² = 9202165238340783522, which contains 22 as substring.

2145013431 is a modest number, since divided by 13431 gives 2145 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145013433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69615 + ... + 95583.

It is an arithmetic number, because the mean of its divisors is an integer number (195086640).

Almost surely, 2^2145013431 is an apocalyptic number.

2145013431 is a deficient number, since it is larger than the sum of its proper divisors (976372809).

2145013431 is a wasteful number, since it uses less digits than its factorization.

2145013431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28486.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2145013431 is about 46314.2897063099. The cubic root of 2145013431 is about 1289.6642819669.

Adding to 2145013431 its reverse (1343105412), we get a palindrome (3488118843).

The spelling of 2145013431 in words is "two billion, one hundred forty-five million, thirteen thousand, four hundred thirty-one".