31540154054 has 4 divisors (see below), whose sum is σ = 47310231084. Its totient is φ = 15770077026.

The previous prime is 31540154039. The next prime is 31540154059. The reversal of 31540154054 is 45045104513.

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

It is a super-3 number, since 3×31540154054³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31540154054.

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 as a sum of consecutive naturals, namely, 7885038512 + ... + 7885038515.

It is an arithmetic number, because the mean of its divisors is an integer number (11827557771).

Almost surely, 2^31540154054 is an apocalyptic number.

31540154054 is a deficient number, since it is larger than the sum of its proper divisors (15770077030).

31540154054 is a wasteful number, since it uses less digits than its factorization.

31540154054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15770077029.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 31540154054 its reverse (45045104513), we get a palindrome (76585258567).

The spelling of 31540154054 in words is "thirty-one billion, five hundred forty million, one hundred fifty-four thousand, fifty-four".