31142213541 has 12 divisors (see below), whose sum is σ = 44990171980. Its totient is φ = 20758256640.

The previous prime is 31142213533. The next prime is 31142213569. The reversal of 31142213541 is 14531224113.

31142213541 is a `hidden beast` number, since 3 + 114 + 2 + 2 + 1 + 3 + 541 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17389960641 + 13752252900 = 131871^2 + 117270^2 .

It is not a de Polignac number, because 31142213541 - 2³ = 31142213533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31142217541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206230 + ... + 323751.

Almost surely, 2^31142213541 is an apocalyptic number.

It is an amenable number.

31142213541 is a deficient number, since it is larger than the sum of its proper divisors (13847958439).

31142213541 is a wasteful number, since it uses less digits than its factorization.

31142213541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536516 (or 536513 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 31142213541 its reverse (14531224113), we get a palindrome (45673437654).

The spelling of 31142213541 in words is "thirty-one billion, one hundred forty-two million, two hundred thirteen thousand, five hundred forty-one".