31540154053 has 4 divisors (see below), whose sum is σ = 31852432908. Its totient is φ = 31227875200.

The previous prime is 31540154039. The next prime is 31540154059. The reversal of 31540154053 is 35045104513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28048880484 + 3491273569 = 167478^2 + 59087^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31540154053 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 (31540154059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156139276 + ... + 156139477.

It is an arithmetic number, because the mean of its divisors is an integer number (7963108227).

Almost surely, 2^31540154053 is an apocalyptic number.

It is an amenable number.

31540154053 is a deficient number, since it is larger than the sum of its proper divisors (312278855).

31540154053 is a wasteful number, since it uses less digits than its factorization.

31540154053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312278854.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 31540154053 its reverse (35045104513), we get a palindrome (66585258566).

The spelling of 31540154053 in words is "thirty-one billion, five hundred forty million, one hundred fifty-four thousand, fifty-three".