220312532151 has 32 divisors (see below), whose sum is σ = 345486816000. Its totient is φ = 138367354464.

The previous prime is 220312532149. The next prime is 220312532197. The reversal of 220312532151 is 151235213022.

220312532151 is a `hidden beast` number, since 2 + 20 + 312 + 5 + 321 + 5 + 1 = 666.

It is not a de Polignac number, because 220312532151 - 2¹ = 220312532149 is a prime.

It is a super-2 number, since 2×220312532151² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220312532351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1107780 + ... + 1291433.

It is an arithmetic number, because the mean of its divisors is an integer number (10796463000).

Almost surely, 2^220312532151 is an apocalyptic number.

220312532151 is a deficient number, since it is larger than the sum of its proper divisors (125174283849).

220312532151 is a wasteful number, since it uses less digits than its factorization.

220312532151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399420 (or 2399414 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 220312532151 its reverse (151235213022), we get a palindrome (371547745173).

The spelling of 220312532151 in words is "two hundred twenty billion, three hundred twelve million, five hundred thirty-two thousand, one hundred fifty-one".