151831028 has 12 divisors (see below), whose sum is σ = 267241380. Its totient is φ = 75476352.

The previous prime is 151831003. The next prime is 151831049. The reversal of 151831028 is 820138151.

It can be written as a sum of positive squares in 2 ways, for example, as 122367844 + 29463184 = 11062^2 + 5428^2 .

It is a super-2 number, since 2×151831028² = 46105322127073568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109013 + ... + 110396.

It is an arithmetic number, because the mean of its divisors is an integer number (22270115).

Almost surely, 2^151831028 is an apocalyptic number.

It is an amenable number.

151831028 is a deficient number, since it is larger than the sum of its proper divisors (115410352).

151831028 is a wasteful number, since it uses less digits than its factorization.

151831028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219586 (or 219584 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 151831028 is about 12321.9733809159. The cubic root of 151831028 is about 533.4824997692.

Adding to 151831028 its reverse (820138151), we get a palindrome (971969179).

The spelling of 151831028 in words is "one hundred fifty-one million, eight hundred thirty-one thousand, twenty-eight".