31269238640641 has 4 divisors (see below), whose sum is σ = 32914988042800. Its totient is φ = 29623489238484.

The previous prime is 31269238640611. The next prime is 31269238640677. The reversal of 31269238640641 is 14604683296213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31269238640641 - 2¹¹ = 31269238638593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31269238640611) 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, 822874701051 + ... + 822874701088.

It is an arithmetic number, because the mean of its divisors is an integer number (8228747010700).

Almost surely, 2^{31269238640641} is an apocalyptic number.

It is an amenable number.

31269238640641 is a deficient number, since it is larger than the sum of its proper divisors (1645749402159).

31269238640641 is a wasteful number, since it uses less digits than its factorization.

31269238640641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645749402158.

The product of its (nonzero) digits is 8957952, while the sum is 55.

The spelling of 31269238640641 in words is "thirty-one trillion, two hundred sixty-nine billion, two hundred thirty-eight million, six hundred forty thousand, six hundred forty-one".