140031551 has 8 divisors (see below), whose sum is σ = 154275408. Its totient is φ = 126040000.

The previous prime is 140031547. The next prime is 140031559. The reversal of 140031551 is 155130041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140031551 - 2² = 140031547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140031559) 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, 61910 + ... + 64131.

It is an arithmetic number, because the mean of its divisors is an integer number (19284426).

Almost surely, 2^140031551 is an apocalyptic number.

140031551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

140031551 is a deficient number, since it is larger than the sum of its proper divisors (14243857).

140031551 is a wasteful number, since it uses less digits than its factorization.

140031551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126153.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 140031551 is about 11833.4927641842. The cubic root of 140031551 is about 519.2884140127.

Adding to 140031551 its reverse (155130041), we get a palindrome (295161592).

The spelling of 140031551 in words is "one hundred forty million, thirty-one thousand, five hundred fifty-one".