31540452135 has 16 divisors (see below), whose sum is σ = 50550708096. Its totient is φ = 16792912928.

The previous prime is 31540452133. The next prime is 31540452179. The reversal of 31540452135 is 53125404513.

It is a cyclic number.

It is not a de Polignac number, because 31540452135 - 2¹ = 31540452133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31540452096 and 31540452105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31540452131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1782249 + ... + 1799858.

It is an arithmetic number, because the mean of its divisors is an integer number (3159419256).

Almost surely, 2^31540452135 is an apocalyptic number.

31540452135 is a deficient number, since it is larger than the sum of its proper divisors (19010255961).

31540452135 is a wasteful number, since it uses less digits than its factorization.

31540452135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582702.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 31540452135 its reverse (53125404513), we get a palindrome (84665856648).

The spelling of 31540452135 in words is "thirty-one billion, five hundred forty million, four hundred fifty-two thousand, one hundred thirty-five".