31357112803461 has 12 divisors (see below), whose sum is σ = 45294155951980. Its totient is φ = 20904488683200.

The previous prime is 31357112803421. The next prime is 31357112803517. The reversal of 31357112803461 is 16430821175313.

31357112803461 is a `hidden beast` number, since 3 + 1 + 3 + 571 + 12 + 8 + 0 + 3 + 4 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13870447733025 + 17486665070436 = 3724305^2 + 4181706^2 .

It is not a de Polignac number, because 31357112803461 - 2¹⁵ = 31357112770693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31357112803411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20312890 + ... + 21802011.

Almost surely, 2^{31357112803461} is an apocalyptic number.

It is an amenable number.

31357112803461 is a deficient number, since it is larger than the sum of its proper divisors (13937043148519).

31357112803461 is a wasteful number, since it uses less digits than its factorization.

31357112803461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42197636 (or 42197633 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

Adding to 31357112803461 its reverse (16430821175313), we get a palindrome (47787933978774).

The spelling of 31357112803461 in words is "thirty-one trillion, three hundred fifty-seven billion, one hundred twelve million, eight hundred three thousand, four hundred sixty-one".