2123013431 has 32 divisors (see below), whose sum is σ = 2950110720. Its totient is φ = 1475020800.

The previous prime is 2123013401. The next prime is 2123013433. The reversal of 2123013431 is 1343103212.

It is not a de Polignac number, because 2123013431 - 2¹⁰ = 2123012407 is a prime.

It is a super-2 number, since 2×2123013431² = 9014372056412783522, which contains 22 as substring.

It is a Duffinian number.

2123013431 is a modest number, since divided by 13431 gives 2123 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123013433) 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 31 ways as a sum of consecutive naturals, for example, 17810 + ... + 67551.

It is an arithmetic number, because the mean of its divisors is an integer number (92190960).

Almost surely, 2^2123013431 is an apocalyptic number.

2123013431 is a deficient number, since it is larger than the sum of its proper divisors (827097289).

2123013431 is a wasteful number, since it uses less digits than its factorization.

2123013431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85415.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2123013431 is about 46076.1698820551. The cubic root of 2123013431 is about 1285.2400407501.

Adding to 2123013431 its reverse (1343103212), we get a palindrome (3466116643).

The spelling of 2123013431 in words is "two billion, one hundred twenty-three million, thirteen thousand, four hundred thirty-one".