2131012542 has 16 divisors (see below), whose sum is σ = 4285837440. Its totient is φ = 706368792.

The previous prime is 2131012523. The next prime is 2131012547. The reversal of 2131012542 is 2452101312.

It is a super-2 number, since 2×2131012542² = 9082428908322603528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131012547) 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 7 ways as a sum of consecutive naturals, for example, 991018 + ... + 993165.

It is an arithmetic number, because the mean of its divisors is an integer number (267864840).

Almost surely, 2^2131012542 is an apocalyptic number.

2131012542 is an abundant number, since it is smaller than the sum of its proper divisors (2154824898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131012542 is a wasteful number, since it uses less digits than its factorization.

2131012542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984367.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2131012542 is about 46162.8913955788. The cubic root of 2131012542 is about 1286.8521977204.

Adding to 2131012542 its reverse (2452101312), we get a palindrome (4583113854).

The spelling of 2131012542 in words is "two billion, one hundred thirty-one million, twelve thousand, five hundred forty-two".