2147151531 has 16 divisors (see below), whose sum is σ = 3338624000. Its totient is φ = 1226943144.

The previous prime is 2147151473. The next prime is 2147151547. The reversal of 2147151531 is 1351517412.

It is not a de Polignac number, because 2147151531 - 2⁶ = 2147151467 is a prime.

It is a super-2 number, since 2×2147151531² = 9220519394151287922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2147151571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1042291 + ... + 1044348.

It is an arithmetic number, because the mean of its divisors is an integer number (208664000).

Almost surely, 2^2147151531 is an apocalyptic number.

2147151531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2147151531 is a deficient number, since it is larger than the sum of its proper divisors (1191472469).

2147151531 is an equidigital number, since it uses as much as digits as its factorization.

2147151531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086663 (or 2086649 counting only the distinct ones).

The product of its digits is 4200, while the sum is 30.

The square root of 2147151531 is about 46337.3664659527. The cubic root of 2147151531 is about 1290.0926422260.

Adding to 2147151531 its reverse (1351517412), we get a palindrome (3498668943).

The spelling of 2147151531 in words is "two billion, one hundred forty-seven million, one hundred fifty-one thousand, five hundred thirty-one".