31561153330055 has 16 divisors (see below), whose sum is σ = 37995036221088. Its totient is φ = 25167850224000.

The previous prime is 31561153330019. The next prime is 31561153330093. The reversal of 31561153330055 is 55003335116513.

It is not a de Polignac number, because 31561153330055 - 2⁴⁰ = 30461641702279 is a prime.

It is a super-2 number, since 2×31561153330055² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31561153329994 and 31561153330021.

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, 6894545 + ... + 10519365.

It is an arithmetic number, because the mean of its divisors is an integer number (2374689763818).

Almost surely, 2^{31561153330055} is an apocalyptic number.

31561153330055 is a deficient number, since it is larger than the sum of its proper divisors (6433882891033).

31561153330055 is a wasteful number, since it uses less digits than its factorization.

31561153330055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3630418.

The product of its (nonzero) digits is 303750, while the sum is 41.

Adding to 31561153330055 its reverse (55003335116513), we get a palindrome (86564488446568).

The spelling of 31561153330055 in words is "thirty-one trillion, five hundred sixty-one billion, one hundred fifty-three million, three hundred thirty thousand, fifty-five".