31361356047 has 32 divisors (see below), whose sum is σ = 49417247232. Its totient is φ = 17320178304.

The previous prime is 31361356027. The next prime is 31361356063. The reversal of 31361356047 is 74065316313.

It is not a de Polignac number, because 31361356047 - 2⁷ = 31361355919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31361355996 and 31361356014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31361356007) 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, 135708 + ... + 284849.

It is an arithmetic number, because the mean of its divisors is an integer number (1544288976).

Almost surely, 2^31361356047 is an apocalyptic number.

31361356047 is a deficient number, since it is larger than the sum of its proper divisors (18055891185).

31361356047 is a wasteful number, since it uses less digits than its factorization.

31361356047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420687.

The product of its (nonzero) digits is 136080, while the sum is 39.

The spelling of 31361356047 in words is "thirty-one billion, three hundred sixty-one million, three hundred fifty-six thousand, forty-seven".