31542420141 has 32 divisors (see below), whose sum is σ = 46951228800. Its totient is φ = 20928758400.

The previous prime is 31542420103. The next prime is 31542420187. The reversal of 31542420141 is 14102424513.

31542420141 is a `hidden beast` number, since 31 + 5 + 424 + 201 + 4 + 1 = 666.

It is not a de Polignac number, because 31542420141 - 2¹⁷ = 31542289069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31542420101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5166991 + ... + 5173091.

It is an arithmetic number, because the mean of its divisors is an integer number (1467225900).

Almost surely, 2^31542420141 is an apocalyptic number.

It is an amenable number.

31542420141 is a deficient number, since it is larger than the sum of its proper divisors (15408808659).

31542420141 is a wasteful number, since it uses less digits than its factorization.

31542420141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6986 (or 6980 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 31542420141 its reverse (14102424513), we get a palindrome (45644844654).

The spelling of 31542420141 in words is "thirty-one billion, five hundred forty-two million, four hundred twenty thousand, one hundred forty-one".