201501338031 has 24 divisors (see below), whose sum is σ = 332796731904. Its totient is φ = 115088374800.

The previous prime is 201501337981. The next prime is 201501338099. The reversal of 201501338031 is 130833105102.

201501338031 is a `hidden beast` number, since 20 + 1 + 501 + 33 + 80 + 31 = 666.

It is not a de Polignac number, because 201501338031 - 2⁷ = 201501337903 is a prime.

It is a super-2 number, since 2×201501338031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201501337986 and 201501338004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201501338531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 634795 + ... + 897756.

It is an arithmetic number, because the mean of its divisors is an integer number (13866530496).

Almost surely, 2^201501338031 is an apocalyptic number.

201501338031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201501338031 is a deficient number, since it is larger than the sum of its proper divisors (131295393873).

201501338031 is a wasteful number, since it uses less digits than its factorization.

201501338031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534651 (or 1534648 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 201501338031 in words is "two hundred one billion, five hundred one million, three hundred thirty-eight thousand, thirty-one".