31404060643463 has 4 divisors (see below), whose sum is σ = 31404189628968. Its totient is φ = 31403931657960.

The previous prime is 31404060643457. The next prime is 31404060643469. The reversal of 31404060643463 is 36434606040413.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (31404060643457) and next prime (31404060643469).

It is a cyclic number.

It is not a de Polignac number, because 31404060643463 - 2⁴⁰ = 30304549015687 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 (31404060643469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64126856 + ... + 64614717.

It is an arithmetic number, because the mean of its divisors is an integer number (7851047407242).

Almost surely, 2^{31404060643463} is an apocalyptic number.

31404060643463 is a deficient number, since it is larger than the sum of its proper divisors (128985505).

31404060643463 is a wasteful number, since it uses less digits than its factorization.

31404060643463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128985504.

The product of its (nonzero) digits is 1492992, while the sum is 44.

Adding to 31404060643463 its reverse (36434606040413), we get a palindrome (67838666683876).

The spelling of 31404060643463 in words is "thirty-one trillion, four hundred four billion, sixty million, six hundred forty-three thousand, four hundred sixty-three".