45131000 has 32 divisors (see below), whose sum is σ = 105608880. Its totient is φ = 18052000.

The previous prime is 45130997. The next prime is 45131003. The reversal of 45131000 is 13154.

It is an interprime number because it is at equal distance from previous prime (45130997) and next prime (45131003).

It is a super-2 number, since 2×45131000² = 4073614322000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45131003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21566 + ... + 23565.

Almost surely, 2^45131000 is an apocalyptic number.

45131000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45131000 is an abundant number, since it is smaller than the sum of its proper divisors (60477880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45131000 is a wasteful number, since it uses less digits than its factorization.

45131000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45152 (or 45138 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 45131000 is about 6717.9610001845. The cubic root of 45131000 is about 356.0341464532.

Adding to 45131000 its reverse (13154), we get a palindrome (45144154).

The spelling of 45131000 in words is "forty-five million, one hundred thirty-one thousand".