131405134542 has 32 divisors (see below), whose sum is σ = 288794847744. Its totient is φ = 39529080000.

The previous prime is 131405134489. The next prime is 131405134591. The reversal of 131405134542 is 245431504131.

It is a super-2 number, since 2×131405134542² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7257334 + ... + 7275417.

It is an arithmetic number, because the mean of its divisors is an integer number (9024838992).

Almost surely, 2^131405134542 is an apocalyptic number.

131405134542 is an abundant number, since it is smaller than the sum of its proper divisors (157389713202).

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

131405134542 is a wasteful number, since it uses less digits than its factorization.

131405134542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14532904.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 131405134542 its reverse (245431504131), we get a palindrome (376836638673).

The spelling of 131405134542 in words is "one hundred thirty-one billion, four hundred five million, one hundred thirty-four thousand, five hundred forty-two".