135555551031 has 32 divisors (see below), whose sum is σ = 194805388800. Its totient is φ = 83541427200.

The previous prime is 135555550957. The next prime is 135555551083. The reversal of 135555551031 is 130155555531.

It is not a de Polignac number, because 135555551031 - 2⁷ = 135555550903 is a prime.

It is a super-2 number, since 2×135555551031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135555551731) 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, 586500 + ... + 784278.

It is an arithmetic number, because the mean of its divisors is an integer number (6087668400).

Almost surely, 2^135555551031 is an apocalyptic number.

135555551031 is a deficient number, since it is larger than the sum of its proper divisors (59249837769).

135555551031 is a wasteful number, since it uses less digits than its factorization.

135555551031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198039.

The product of its (nonzero) digits is 140625, while the sum is 39.

The spelling of 135555551031 in words is "one hundred thirty-five billion, five hundred fifty-five million, five hundred fifty-one thousand, thirty-one".