248750989631 has 4 divisors (see below), whose sum is σ = 261843147000. Its totient is φ = 235658832264.

The previous prime is 248750989559. The next prime is 248750989651. The reversal of 248750989631 is 136989057842.

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

It is a cyclic number.

It is not a de Polignac number, because 248750989631 - 2¹⁸ = 248750727487 is a prime.

It is a super-2 number, since 2×248750989631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248750989651) 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, 6546078656 + ... + 6546078693.

It is an arithmetic number, because the mean of its divisors is an integer number (65460786750).

It is a 1-persistent number, because it is pandigital, but 2⋅248750989631 = 497501979262 is not.

Almost surely, 2^248750989631 is an apocalyptic number.

248750989631 is a deficient number, since it is larger than the sum of its proper divisors (13092157369).

248750989631 is a wasteful number, since it uses less digits than its factorization.

248750989631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13092157368.

The product of its (nonzero) digits is 26127360, while the sum is 62.

The spelling of 248750989631 in words is "two hundred forty-eight billion, seven hundred fifty million, nine hundred eighty-nine thousand, six hundred thirty-one".