2131012546 has 16 divisors (see below), whose sum is σ = 3443195448. Its totient is φ = 983318400.

The previous prime is 2131012523. The next prime is 2131012547. The reversal of 2131012546 is 6452101312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2082918321 + 48094225 = 45639^2 + 6935^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2131012546.

It is not an unprimeable number, because it can be changed into a prime (2131012547) 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, 171876 + ... + 183856.

Almost surely, 2^2131012546 is an apocalyptic number.

2131012546 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2131012546 is a deficient number, since it is larger than the sum of its proper divisors (1312182902).

2131012546 is a wasteful number, since it uses less digits than its factorization.

2131012546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18837.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2131012546 is about 46162.8914389036. The cubic root of 2131012546 is about 1286.8521985255.

Adding to 2131012546 its reverse (6452101312), we get a palindrome (8583113858).

It can be divided in two parts, 21310 and 12546, that added together give a square (33856 = 184²).

The spelling of 2131012546 in words is "two billion, one hundred thirty-one million, twelve thousand, five hundred forty-six".